chan_1993_co
============

W\. F\. Chan, G\. Cooper and C\. E\. Brion, "Absolute optical oscillator strengths for discrete and continuum photoabsorption of carbon monoxide \(7\-200 eV\) and transition moments for the X 1Sigma\+ \-\> A 1Pi system", Chem\. Phys\. 170, 123 \(1993\)

`Source record <https://github.com/LupoLab/optmat/blob/main/src/optmat/data/sources/chan_1993_co.toml>`__ · :doc:`Catalogue </the-data/sources>` · :doc:`Review register </register>`

DOI: `10\.1016/0301\-0104\(93\)80098\-t <https://doi.org/10.1016/0301-0104%2893%2980098-t>`__

**Source kind:** measurement

**Recorded technique:** Dipole \(e,e\) spectroscopy\. Low resolution \(about 1 eV FWHM, 8 keV impact energy, zero mean scattering angle\)\: energy\-loss spectra at 7\-50, 50\-94 and 94\-200 eV in 0\.5, 1 and 2 eV steps, converted with the spectrometer's known Bethe\-Born factor; the valence\-shell fraction above 200 eV estimated from a fit A E^\-B to 90\-200 eV \(B = 2\.243; 6\.7 %\), and the whole area TRK\-normalised to 10\.3 \(10 valence electrons plus 0\.3 for Pauli\-excluded K\-shell transitions\) \(p\. 4\)\. High resolution \(0\.048 eV FWHM, 3 keV\)\: 7\-20\.3 eV, Bethe\-Born converted and normalised to the low\-resolution value at 20 eV \(smooth continuum\); vibronic band strengths from Voigt\-profile fits \(Figs\. 3\-4\)\. The absolute scale is independent of any optical measurement and of the target density; no line saturation\. Background gases and non\-spectral electrons removed by quartering the sample pressure; energy scale from helium's 21\.218 eV line admitted with the sample\. Matheson CO, 99\.5 % \(pp\. 4\-5\)\.

**Materials in structured entries:** CO

**Dataset quantities:** differential\_oscillator\_strength, interval\_oscillator\_strength, oscillator\_strength

**Contents:** 39 datasets; 0 formulas.

Curation notes
--------------

Values per molecule; no density or state involved \(room\-temperature CO, not stated\)\.

Table 1 \(p\. 6\)\: the low\-resolution df/dE, 7\-200 eV \(184 points; sigma\(Mb\) = 109\.75 df/dE\(eV^\-1\), note a\)\. No uncertainty is stated for it\. The present data agree 'extremely' well with Samson and Haddad's photoabsorption, are about 10 % below the 1976 dipole \(e,e\) data of Ref\. \[64\] \(J\. Phys\. B 9, 675\) and about 15 % above De Reilhac's at 25 eV and above 60 eV \(p\. 5\)\. Olney et al\. \(1997, olney\_1997 Section 3\.1\) later found this low\-resolution energy scale about 0\.25 eV too high\. Two single points stand off their neighbours \(41\.0 eV\: 11\.69 between 10\.91 and 10\.64; 43\.0 eV\: 10\.33 between 10\.11 and 9\.88\); the image prints them so, and without other evidence they are kept\.

Sums computed from Table 1 \(2026\-09\-27; trapezoidal rule, with the A E^\-B tail, B = 2\.243, from the 200 eV point\)\: S\(0\) = 9\.610 over 7\-200 eV and 10\.352 with the tail \(the paper\: 6\.7 % above 200 eV, normalised to 10\.3; 9\.610/0\.933 = 10\.30\); S\(\-1\) = 9\.246, S\(\-2\) = 12\.662 au, S\(\-3\) = 22\.06, S\(\-4\) = 45\.05, S\(\-6\) = 259\.7\. The S\(\-2\) of 12\.66 au reproduces Olney et al\.'s 12\.64 au for 'the originally published CO spectrum' \(olney\_1997 table1\_CO\_published\)\. The paper itself prints no S\(k\)\.

Discrete bands \(Tables 2\-4\)\: oscillator strengths of X 1Sigma\+ \(v'' = 0\) \-\> A 1Pi \(v' = 0\-12\), B 1Sigma\+, C 1Sigma\+ and E 1Pi \(v' = 0, 1\), from Voigt\-profile fits of the high\-resolution spectrum; uncertainty 'about 5% for resolved peaks and about 10% for unresolved peaks' \(p\. 7\), which peaks are unresolved not said\. No transition energies are tabulated \(the positions are Krupenie's, Tilford and Simmons's and Tanaka et al\.'s\)\: rows and label abscissa are v' \(Table 2\) or state and v' \(Table 4\: B0, B1, C0, C1, E0, E1\)\. The literature columns are reproduced datasets\. Table 4's values of Nielsen et al\., Padial et al\., Wood, Coughran et al\. and Rose et al\. are printed centred between the v' = 0 and 1 columns\: the state's sum \(text p\. 11\), stored as \*\_sum datasets with rows B, C, E\.

Column sums of Table 2 \(checked 2026\-09\-27\) against Table 3\: present 0\.18074 \(0\.1807\), Lassettre and Skerbele 0\.19445 \(0\.1945\), Eidelsberg et al\. 0\.19406 \(0\.1941\), Chantranupong et al\. 0\.2250 \(0\.2250\), Field et al\. 0\.197 against 0\.187 \(the v' = 4 value is misprinted\: erratum\), Kirby and Cooper 0\.1668 against 0\.1636 \(no single misprint explains the 0\.0032; kept\)\. Chantranupong et al\.'s v' = 7 value 0\.0010 falls from 0\.0168 at v' = 6 but is part of their printed total\: kept\.

Table 5 \(p\. 13\)\: integrated oscillator strengths over energy intervals, 12\.13\-16\.98 eV \(present work, and Stark et al\.'s and Letzelter et al\.'s higher\-resolution photoabsorption summed over the same intervals by Chan et al\.\)\. Two interval edges are misprinted \(errata\)\: '12\.237\-13\.364' for 13\.237 and '15\.085\-15\.296' for 15\.269\. The present intervals from 12\.130 to 14\.016 eV sum to 0\.645; the text \(p\. 11\) gives 0\.640 for 12\-14 eV, against Berkowitz's 0\.7921 \(from Huffman et al\. 1964\) and 0\.8165 \(from Cook et al\. 1965\) \(inline datasets\)\. These high\-resolution interval values overlap the low\-resolution Table 1 \(the same measurement programme at two resolutions; the HR scale is normalised to the LR at 20 eV\)\: not independent of it\.

Text only \(p\. 11\)\: from Hesser's lifetimes \(cited as '\[43\]', a misprint for \[45\]\) the B and C v' = 0 oscillator strengths are 0\.0054 and 0\.119 with Dotchin and Chupp's branching ratios, 0\.0079 and 0\.1350 with Aarts and De Heer's; lifetime\-derived values are therefore not in Table 4 \(not extracted\)\.

Transition moments \(Section 3\.3\)\: \|R\_e\(r\_v'0\)\| of the A\-X bands derived from Table 2 with Eidelsberg et al\.'s Franck\-Condon factors and r centroids \(Fig\. 6 only; no fit of the present values\)\. The paper quotes Field et al\.'s linear dipole moment function, Eq\. \(2\), \|R\_e\(r\)\| = 7\.48\(1 \- 0\.683 r\), and De Leon's \(1988\), Eq\. \(3\), \|R\_e\(r\)\| = 1\.5741\(1 \- 1\.17722 r \+ 0\.35013 r^2\), units not stated\. Not recorded as formulas\: they are other authors' functions with no value printed here to check them against, and at r = 1\.128 A Eq\. \(2\) gives 1\.72 but Eq\. \(3\) 0\.185 \(so Eq\. \(3\) as printed is in other units or misprinted; De Leon's paper is not in the library\)\.

**Recorded bibliographic identity status:** VALIDATED\_WITH\_WARNINGS. This concerns identification of the source; it does not establish the scientific correctness of its contents.

Datasets
--------

chan\_1993\_co/continuum
~~~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "continuum",
     "material": "CO",
     "file": "CO/chan_1993_co__continuum.csv",
     "table": "tbl_ca93596af562",
     "quantity": "differential_oscillator_strength",
     "unit": "1/eV",
     "scale": 0.01,
     "abscissa_unit": "eV",
     "use": "primary"
   }

Table 1\: low\-resolution \(1 eV FWHM\) dipole \(e,e\) absolute df/dE \(10^\-2 eV^\-1\), 7\-200 eV, 184 points in print order \(0\.5 eV steps to 50 eV, 1 eV to 94 eV, 2 eV to 200 eV\); TRK\-normalised to 10\.3 including the A E^\-B tail above 200 eV; independent of optical data\. No uncertainty stated\. Olney et al\. \(1997\) found the energy scale about 0\.25 eV too high \(source notes\)\.

chan\_1993\_co/a\_state\_present
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "a_state_present",
     "material": "CO",
     "file": "CO/chan_1993_co__a_state_present.csv",
     "table": "tbl_889679627bd2",
     "quantity": "oscillator_strength",
     "abscissa": "label",
     "use": "primary",
     "uncertainty": {
       "relative": 0.05,
       "level": "not stated"
     }
   }

Table 2 'present HR dipole \(e, e\)'\: absolute oscillator strengths of the A 1Pi \(v'\) \<\- X 1Sigma\+ \(v'' = 0\) vibronic bands, v' = 0\-12 \(rows and label v'\); 0\.048 eV FWHM, Voigt\-profile fits\. Uncertainty about 5 % \(resolved peaks\), about 10 % \(unresolved; not identified\), p\. 7\: the 5 % is stored\. Sums to 0\.18074 \(Table 3\: 0\.1807\)\.

chan\_1993\_co/a\_state\_lassettre\_1971
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "a_state_lassettre_1971",
     "material": "CO",
     "file": "CO/chan_1993_co__a_state_lassettre_1971.csv",
     "table": "tbl_889679627bd2",
     "quantity": "oscillator_strength",
     "abscissa": "label",
     "use": "reproduced",
     "reproduced_from": [
       "E. N. Lassettre and A. Skerbele, J. Chem. Phys. 54, 1597 (1971)"
     ]
   }

Table 2\: oscillator strengths of the A 1Pi \(v'\) \<\- X 1Sigma\+ \(v'' = 0\) bands, rows and label v'; electron impact, generalised oscillator strengths extrapolated to zero momentum transfer, normalised to Bromberg's elastic cross sections; 'in general about 5\-10% higher than the present values' \(p\. 9\)\.

chan\_1993\_co/a\_state\_eidelsberg\_1992
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "a_state_eidelsberg_1992",
     "material": "CO",
     "file": "CO/chan_1993_co__a_state_eidelsberg_1992.csv",
     "table": "tbl_889679627bd2",
     "quantity": "oscillator_strength",
     "abscissa": "label",
     "use": "reproduced",
     "reproduced_from": [
       "M. Eidelsberg, F. Rostas, J. Breton and B. Thieblemont, J. Chem. Phys. 96, 5585 (1992)"
     ]
   }

Table 2\: oscillator strengths of the A 1Pi \(v'\) \<\- X 1Sigma\+ \(v'' = 0\) bands, rows and label v'; Beer\-Lambert photoabsorption, integrated absorption at low pressure\.

chan\_1993\_co/a\_state\_lee\_1981
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "a_state_lee_1981",
     "material": "CO",
     "file": "CO/chan_1993_co__a_state_lee_1981.csv",
     "table": "tbl_889679627bd2",
     "quantity": "oscillator_strength",
     "abscissa": "label",
     "use": "reproduced",
     "reproduced_from": [
       "L. C. Lee and J. A. Guest, J. Phys. B 14, 3415 (1981)"
     ]
   }

Table 2\: oscillator strengths of the A 1Pi \(v'\) \<\- X 1Sigma\+ \(v'' = 0\) bands, rows and label v'; Beer\-Lambert photoabsorption, subject to line saturation \(pp\. 2, 11\)\. Only v' = 0 was reported numerically, about 40 % below the present value \(p\. 7\)\.

chan\_1993\_co/a\_state\_rich\_1968
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "a_state_rich_1968",
     "material": "CO",
     "file": "CO/chan_1993_co__a_state_rich_1968.csv",
     "table": "tbl_889679627bd2",
     "quantity": "oscillator_strength",
     "abscissa": "label",
     "use": "reproduced",
     "reproduced_from": [
       "J. C. Rich, Astrophys. J. 153, 327 (1968)"
     ]
   }

Table 2\: oscillator strengths of the A 1Pi \(v'\) \<\- X 1Sigma\+ \(v'' = 0\) bands, rows and label v'; shock\-tube absorption, curves of growth; about 25 % below the present work \(p\. 9\)\.

chan\_1993\_co/a\_state\_field\_1983
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "a_state_field_1983",
     "material": "CO",
     "file": "CO/chan_1993_co__a_state_field_1983.csv",
     "table": "tbl_889679627bd2",
     "quantity": "oscillator_strength",
     "abscissa": "label",
     "use": "reproduced",
     "reproduced_from": [
       "R. W. Field, O. Benoist d'Azy, M. Lavollee, R. Lopez-Delgado and A. Tramer, J. Chem. Phys. 78, 2838 (1983)",
       "K. Kirby and D. L. Cooper, J. Chem. Phys. 90, 4895 (1989)"
     ]
   }

Table 2\: oscillator strengths of the A 1Pi \(v'\) \<\- X 1Sigma\+ \(v'' = 0\) bands, rows and label v'; deperturbed lifetimes\. Note a\: 'As derived by Kirby and Cooper \[14\] using the linear dipole moment reported by Field et al\. \[59\]'\. The v' = 4 value is misprinted \(erratum\)\.

chan\_1993\_co/a\_state\_hesser\_1968
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "a_state_hesser_1968",
     "material": "CO",
     "file": "CO/chan_1993_co__a_state_hesser_1968.csv",
     "table": "tbl_889679627bd2",
     "quantity": "oscillator_strength",
     "abscissa": "label",
     "use": "reproduced",
     "reproduced_from": [
       "J. E. Hesser, J. Chem. Phys. 48, 2518 (1968)"
     ]
   }

Table 2\: oscillator strengths of the A 1Pi \(v'\) \<\- X 1Sigma\+ \(v'' = 0\) bands, rows and label v'; radiative lifetimes converted with measured band emission intensities; 'much smaller than the presently reported results' \(p\. 9\)\.

chan\_1993\_co/a\_state\_chantranupong\_1992
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "a_state_chantranupong_1992",
     "material": "CO",
     "file": "CO/chan_1993_co__a_state_chantranupong_1992.csv",
     "table": "tbl_889679627bd2",
     "quantity": "oscillator_strength",
     "abscissa": "label",
     "use": "reproduced",
     "reproduced_from": [
       "L. Chantranupong, K. Bhanuprakash, M. Honigmann, G. Hirsch and R. J. Buenker, Chem. Phys. 161, 351 (1992)"
     ]
   }

Table 2\: oscillator strengths of the A 1Pi \(v'\) \<\- X 1Sigma\+ \(v'' = 0\) bands, rows and label v'; theory, configuration interaction \('\(I\)' in Table 2\)\. The v' = 7 value, 0\.0010, is part of their printed total \(0\.2250\) and kept\.

chan\_1993\_co/a\_state\_kirby\_1989
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "a_state_kirby_1989",
     "material": "CO",
     "file": "CO/chan_1993_co__a_state_kirby_1989.csv",
     "table": "tbl_889679627bd2",
     "quantity": "oscillator_strength",
     "abscissa": "label",
     "use": "reproduced",
     "reproduced_from": [
       "K. Kirby and D. L. Cooper, J. Chem. Phys. 90, 4895 (1989)"
     ]
   }

Table 2\: oscillator strengths of the A 1Pi \(v'\) \<\- X 1Sigma\+ \(v'' = 0\) bands, rows and label v'; theory, configuration interaction \('\(II\)' in Table 2\)\. The column sums to 0\.1668, their Table 3 total is 0\.1636 \(kept\)\.

chan\_1993\_co/a\_total\_present
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "a_total_present",
     "material": "CO",
     "file": "CO/chan_1993_co__a_total_present.csv",
     "table": "tbl_05bec4dbd2ec",
     "quantity": "oscillator_strength",
     "abscissa": "label",
     "use": "check"
   }

Table 3 'present work'\: the total A 1Pi oscillator strength, 0\.1807, the sum of Table 2's present column \(0\.18074\)\. A sum of the band dataset\: a check\.

chan\_1993\_co/a\_total\_chantranupong\_1992
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "a_total_chantranupong_1992",
     "material": "CO",
     "file": "CO/chan_1993_co__a_total_chantranupong_1992.csv",
     "table": "tbl_05bec4dbd2ec",
     "quantity": "oscillator_strength",
     "abscissa": "label",
     "use": "reproduced",
     "reproduced_from": [
       "L. Chantranupong, K. Bhanuprakash, M. Honigmann, G. Hirsch and R. J. Buenker, Chem. Phys. 161, 351 (1992)"
     ]
   }

Table 3\: the total oscillator strength of the A 1Pi state \(row A, label abscissa\); theory, configuration interaction \('\(I\)' in Table 2\)\.

chan\_1993\_co/a\_total\_kirby\_1989
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "a_total_kirby_1989",
     "material": "CO",
     "file": "CO/chan_1993_co__a_total_kirby_1989.csv",
     "table": "tbl_05bec4dbd2ec",
     "quantity": "oscillator_strength",
     "abscissa": "label",
     "use": "reproduced",
     "reproduced_from": [
       "K. Kirby and D. L. Cooper, J. Chem. Phys. 90, 4895 (1989)"
     ]
   }

Table 3\: the total oscillator strength of the A 1Pi state \(row A, label abscissa\); theory, configuration interaction \('\(II\)' in Table 2\)\.

chan\_1993\_co/a\_total\_lynch\_1982
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "a_total_lynch_1982",
     "material": "CO",
     "file": "CO/chan_1993_co__a_total_lynch_1982.csv",
     "table": "tbl_05bec4dbd2ec",
     "quantity": "oscillator_strength",
     "abscissa": "label",
     "use": "reproduced",
     "reproduced_from": [
       "D. Lynch, M. F. Herman and D. L. Yeager, Chem. Phys. 64, 69 (1982)"
     ]
   }

Table 3\: the total oscillator strength of the A 1Pi state \(row A, label abscissa\); theory, multiconfigurational random\-phase approximation\.

chan\_1993\_co/a\_total\_nielsen\_1980
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "a_total_nielsen_1980",
     "material": "CO",
     "file": "CO/chan_1993_co__a_total_nielsen_1980.csv",
     "table": "tbl_05bec4dbd2ec",
     "quantity": "oscillator_strength",
     "abscissa": "label",
     "use": "reproduced",
     "reproduced_from": [
       "E. S. Nielsen, P. Jorgensen and J. Oddershede, J. Chem. Phys. 73, 6238 (1980)"
     ]
   }

Table 3\: the total oscillator strength of the A 1Pi state \(row A, label abscissa\); theory, second\-order polarization propagator \(SOPPA\)\.

chan\_1993\_co/a\_total\_padial\_1978
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "a_total_padial_1978",
     "material": "CO",
     "file": "CO/chan_1993_co__a_total_padial_1978.csv",
     "table": "tbl_05bec4dbd2ec",
     "quantity": "oscillator_strength",
     "abscissa": "label",
     "use": "reproduced",
     "reproduced_from": [
       "N. Padial, G. Csanak, B. V. McKoy and P. W. Langhoff, J. Chem. Phys. 69, 2992 (1978)"
     ]
   }

Table 3\: the total oscillator strength of the A 1Pi state \(row A, label abscissa\); theory, Stieltjes\-Tchebycheff pseudospectra, static exchange\.

chan\_1993\_co/a\_total\_wood\_1974
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "a_total_wood_1974",
     "material": "CO",
     "file": "CO/chan_1993_co__a_total_wood_1974.csv",
     "table": "tbl_05bec4dbd2ec",
     "quantity": "oscillator_strength",
     "abscissa": "label",
     "use": "reproduced",
     "reproduced_from": [
       "M. H. Wood, Chem. Phys. Lett. 28, 477 (1974)"
     ]
   }

Table 3\: the total oscillator strength of the A 1Pi state \(row A, label abscissa\); theory, configuration interaction\.

chan\_1993\_co/a\_total\_coughran\_1973
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "a_total_coughran_1973",
     "material": "CO",
     "file": "CO/chan_1993_co__a_total_coughran_1973.csv",
     "table": "tbl_05bec4dbd2ec",
     "quantity": "oscillator_strength",
     "abscissa": "label",
     "use": "reproduced",
     "reproduced_from": [
       "W. Coughran, J. Rose, T. Shibuya and V. McKoy, J. Chem. Phys. 58, 2699 (1973)"
     ]
   }

Table 3\: the total oscillator strength of the A 1Pi state \(row A, label abscissa\); theory, equation of motion \(random\-phase approximation\)\.

chan\_1993\_co/a\_total\_rose\_1973
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "a_total_rose_1973",
     "material": "CO",
     "file": "CO/chan_1993_co__a_total_rose_1973.csv",
     "table": "tbl_05bec4dbd2ec",
     "quantity": "oscillator_strength",
     "abscissa": "label",
     "use": "reproduced",
     "reproduced_from": [
       "J. Rose, T. Shibuya and V. McKoy, J. Chem. Phys. 58, 74 (1973)"
     ]
   }

Table 3\: the total oscillator strength of the A 1Pi state \(row A, label abscissa\); theory, equation of motion \(random\-phase approximation\)\.

chan\_1993\_co/a\_total\_eidelsberg\_1992
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "a_total_eidelsberg_1992",
     "material": "CO",
     "file": "CO/chan_1993_co__a_total_eidelsberg_1992.csv",
     "table": "tbl_05bec4dbd2ec",
     "quantity": "oscillator_strength",
     "abscissa": "label",
     "use": "reproduced",
     "reproduced_from": [
       "M. Eidelsberg, F. Rostas, J. Breton and B. Thieblemont, J. Chem. Phys. 96, 5585 (1992)"
     ]
   }

Table 3\: the total oscillator strength of the A 1Pi state \(row A, label abscissa\); Beer\-Lambert photoabsorption, integrated absorption at low pressure\.

chan\_1993\_co/a\_total\_field\_1983
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "a_total_field_1983",
     "material": "CO",
     "file": "CO/chan_1993_co__a_total_field_1983.csv",
     "table": "tbl_05bec4dbd2ec",
     "quantity": "oscillator_strength",
     "abscissa": "label",
     "use": "reproduced",
     "reproduced_from": [
       "R. W. Field, O. Benoist d'Azy, M. Lavollee, R. Lopez-Delgado and A. Tramer, J. Chem. Phys. 78, 2838 (1983)"
     ]
   }

Table 3\: the total oscillator strength of the A 1Pi state \(row A, label abscissa\); deperturbed lifetimes\.

chan\_1993\_co/a\_total\_lassettre\_1971
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "a_total_lassettre_1971",
     "material": "CO",
     "file": "CO/chan_1993_co__a_total_lassettre_1971.csv",
     "table": "tbl_05bec4dbd2ec",
     "quantity": "oscillator_strength",
     "abscissa": "label",
     "use": "reproduced",
     "reproduced_from": [
       "E. N. Lassettre and A. Skerbele, J. Chem. Phys. 54, 1597 (1971)"
     ]
   }

Table 3\: the total oscillator strength of the A 1Pi state \(row A, label abscissa\); electron impact, generalised oscillator strengths extrapolated to zero momentum transfer, normalised to Bromberg's elastic cross sections; 'in general about 5\-10% higher than the present values' \(p\. 9\)\. The label is garbled in the extraction \('Lasscttce and Skcrbcle'\); the image reads Lassettre and Skerbele\.

chan\_1993\_co/bce\_present
~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "bce_present",
     "material": "CO",
     "file": "CO/chan_1993_co__bce_present.csv",
     "table": "tbl_0aedd197bfd4",
     "quantity": "oscillator_strength",
     "abscissa": "label",
     "use": "primary",
     "uncertainty": {
       "relative": 0.05,
       "level": "not stated"
     }
   }

Table 4 'present work'\: oscillator strengths of the B 1Sigma\+, C 1Sigma\+ and E 1Pi \(v' = 0, 1\) \<\- X 1Sigma\+ \(v'' = 0\) bands, rows B0, B1, C0, C1, E0, E1 \(state and v'\); high\-resolution dipole \(e,e\), Voigt\-profile fits \(Fig\. 4\)\. Uncertainty about 5 % \(resolved\) or 10 % \(unresolved\), p\. 7\: the 5 % is stored\.

chan\_1993\_co/bce\_chantranupong\_1992
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "bce_chantranupong_1992",
     "material": "CO",
     "file": "CO/chan_1993_co__bce_chantranupong_1992.csv",
     "table": "tbl_0aedd197bfd4",
     "quantity": "oscillator_strength",
     "abscissa": "label",
     "use": "reproduced",
     "reproduced_from": [
       "L. Chantranupong, K. Bhanuprakash, M. Honigmann, G. Hirsch and R. J. Buenker, Chem. Phys. 161, 351 (1992)"
     ]
   }

Table 4\: oscillator strengths of the B, C and E \(v' = 0, 1\) bands, rows B0 \.\.\. E1 \(state and v'\); theory, configuration interaction \('\(I\)' in Table 2\)\.

chan\_1993\_co/bce\_kirby\_1989
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "bce_kirby_1989",
     "material": "CO",
     "file": "CO/chan_1993_co__bce_kirby_1989.csv",
     "table": "tbl_0aedd197bfd4",
     "quantity": "oscillator_strength",
     "abscissa": "label",
     "use": "reproduced",
     "reproduced_from": [
       "K. Kirby and D. L. Cooper, J. Chem. Phys. 90, 4895 (1989)"
     ]
   }

Table 4\: oscillator strengths of the B, C and E \(v' = 0, 1\) bands, rows B0 \.\.\. E1 \(state and v'\); theory, configuration interaction \('\(II\)' in Table 2\)\.

chan\_1993\_co/bce\_letzelter\_1987
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "bce_letzelter_1987",
     "material": "CO",
     "file": "CO/chan_1993_co__bce_letzelter_1987.csv",
     "table": "tbl_0aedd197bfd4",
     "quantity": "oscillator_strength",
     "abscissa": "label",
     "use": "reproduced",
     "reproduced_from": [
       "C. Letzelter, M. Eidelsberg and F. Rostas, Chem. Phys. 114, 273 (1987)"
     ]
   }

Table 4\: oscillator strengths of the B, C and E \(v' = 0, 1\) bands, rows B0 \.\.\. E1 \(state and v'\); Beer\-Lambert photoabsorption, integrated absorption extrapolated to low pressure\.

chan\_1993\_co/bce\_lee\_1981
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "bce_lee_1981",
     "material": "CO",
     "file": "CO/chan_1993_co__bce_lee_1981.csv",
     "table": "tbl_0aedd197bfd4",
     "quantity": "oscillator_strength",
     "abscissa": "label",
     "use": "reproduced",
     "reproduced_from": [
       "L. C. Lee and J. A. Guest, J. Phys. B 14, 3415 (1981)"
     ]
   }

Table 4\: oscillator strengths of the B, C and E \(v' = 0, 1\) bands, rows B0 \.\.\. E1 \(state and v'\); Beer\-Lambert photoabsorption, subject to line saturation \(pp\. 2, 11\)\.

chan\_1993\_co/bce\_lassettre\_1971
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "bce_lassettre_1971",
     "material": "CO",
     "file": "CO/chan_1993_co__bce_lassettre_1971.csv",
     "table": "tbl_0aedd197bfd4",
     "quantity": "oscillator_strength",
     "abscissa": "label",
     "use": "reproduced",
     "reproduced_from": [
       "E. N. Lassettre and A. Skerbele, J. Chem. Phys. 54, 1597 (1971)"
     ]
   }

Table 4\: oscillator strengths of the B, C and E \(v' = 0, 1\) bands, rows B0 \.\.\. E1 \(state and v'\); electron impact, generalised oscillator strengths extrapolated to zero momentum transfer, normalised to Bromberg's elastic cross sections; 'in general about 5\-10% higher than the present values' \(p\. 9\)\.

chan\_1993\_co/bce\_nielsen\_1980\_sum
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "bce_nielsen_1980_sum",
     "material": "CO",
     "file": "CO/chan_1993_co__bce_nielsen_1980_sum.csv",
     "table": "tbl_0aedd197bfd4",
     "quantity": "oscillator_strength",
     "abscissa": "label",
     "use": "reproduced",
     "reproduced_from": [
       "E. S. Nielsen, P. Jorgensen and J. Oddershede, J. Chem. Phys. 73, 6238 (1980)"
     ]
   }

Table 4\: the state's oscillator strength \(rows B, C, E\), printed centred between the v' = 0 and 1 columns \(image; the cells put it under v' = 1\) and compared with the present v' = 0 \+ 1 sums \(p\. 11\); theory, second\-order polarization propagator \(SOPPA\)\.

chan\_1993\_co/bce\_padial\_1978\_sum
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "bce_padial_1978_sum",
     "material": "CO",
     "file": "CO/chan_1993_co__bce_padial_1978_sum.csv",
     "table": "tbl_0aedd197bfd4",
     "quantity": "oscillator_strength",
     "abscissa": "label",
     "use": "reproduced",
     "reproduced_from": [
       "N. Padial, G. Csanak, B. V. McKoy and P. W. Langhoff, J. Chem. Phys. 69, 2992 (1978)"
     ]
   }

Table 4\: the state's oscillator strength \(rows B, C, E\), printed centred between the v' = 0 and 1 columns \(image; the cells put it under v' = 1\) and compared with the present v' = 0 \+ 1 sums \(p\. 11\); theory, Stieltjes\-Tchebycheff pseudospectra, static exchange\.

chan\_1993\_co/bce\_wood\_1974\_sum
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "bce_wood_1974_sum",
     "material": "CO",
     "file": "CO/chan_1993_co__bce_wood_1974_sum.csv",
     "table": "tbl_0aedd197bfd4",
     "quantity": "oscillator_strength",
     "abscissa": "label",
     "use": "reproduced",
     "reproduced_from": [
       "M. H. Wood, Chem. Phys. Lett. 28, 477 (1974)"
     ]
   }

Table 4\: the state's oscillator strength \(rows B, C, E\), printed centred between the v' = 0 and 1 columns \(image; the cells put it under v' = 1\) and compared with the present v' = 0 \+ 1 sums \(p\. 11\); theory, configuration interaction\.

chan\_1993\_co/bce\_coughran\_1973\_sum
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "bce_coughran_1973_sum",
     "material": "CO",
     "file": "CO/chan_1993_co__bce_coughran_1973_sum.csv",
     "table": "tbl_0aedd197bfd4",
     "quantity": "oscillator_strength",
     "abscissa": "label",
     "use": "reproduced",
     "reproduced_from": [
       "W. Coughran, J. Rose, T. Shibuya and V. McKoy, J. Chem. Phys. 58, 2699 (1973)"
     ]
   }

Table 4\: the state's oscillator strength \(rows B, C, E\), printed centred between the v' = 0 and 1 columns \(image; the cells put it under v' = 1\) and compared with the present v' = 0 \+ 1 sums \(p\. 11\); theory, equation of motion \(random\-phase approximation\)\.

chan\_1993\_co/bce\_rose\_1973\_sum
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "bce_rose_1973_sum",
     "material": "CO",
     "file": "CO/chan_1993_co__bce_rose_1973_sum.csv",
     "table": "tbl_0aedd197bfd4",
     "quantity": "oscillator_strength",
     "abscissa": "label",
     "use": "reproduced",
     "reproduced_from": [
       "J. Rose, T. Shibuya and V. McKoy, J. Chem. Phys. 58, 74 (1973)"
     ]
   }

Table 4\: the state's oscillator strength \(rows B, C, E\), printed centred between the v' = 0 and 1 columns \(image; the cells put it under v' = 1\) and compared with the present v' = 0 \+ 1 sums \(p\. 11\); theory, equation of motion \(random\-phase approximation\)\.

chan\_1993\_co/intervals\_present
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "intervals_present",
     "material": "CO",
     "file": "CO/chan_1993_co__intervals_present.csv",
     "table": "tbl_d446b685ddb3",
     "quantity": "interval_oscillator_strength",
     "abscissa_unit": "eV",
     "columns": {
       "x_upper": "eV"
     },
     "use": "primary"
   }

Table 5 'present work'\: the high\-resolution \(0\.048 eV\) oscillator strength integrated over each energy interval \(row\: the interval as printed; x the lower, x\_upper the upper edge, eV\), 12\.130\-16\.978 eV, 28 intervals\. Two printed edges are corrected by errata\. Overlaps the low\-resolution continuum dataset \(source notes\)\. No uncertainty stated\.

chan\_1993\_co/intervals\_stark\_1991
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "intervals_stark_1991",
     "material": "CO",
     "file": "CO/chan_1993_co__intervals_stark_1991.csv",
     "table": "tbl_d446b685ddb3",
     "quantity": "interval_oscillator_strength",
     "abscissa_unit": "eV",
     "columns": {
       "x_upper": "eV"
     },
     "use": "reproduced",
     "reproduced_from": [
       "G. Stark, K. Yoshino, P. L. Smith, K. Ito and W. H. Parkinson, Astrophys. J. 369, 574 (1991)"
     ]
   }

Table 5\: oscillator strength integrated over each energy interval \(row\: the interval as printed; x and x\_upper its edges, eV\); high\-resolution Beer\-Lambert photoabsorption \(the paper prints 'Paskinson'\); oscillator strengths of several transitions summed over each interval by Chan et al\. \(p\. 11\)\. Summed from the original's line values by Chan et al\.

chan\_1993\_co/intervals\_letzelter\_1987
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "intervals_letzelter_1987",
     "material": "CO",
     "file": "CO/chan_1993_co__intervals_letzelter_1987.csv",
     "table": "tbl_d446b685ddb3",
     "quantity": "interval_oscillator_strength",
     "abscissa_unit": "eV",
     "columns": {
       "x_upper": "eV"
     },
     "use": "reproduced",
     "reproduced_from": [
       "C. Letzelter, M. Eidelsberg and F. Rostas, Chem. Phys. 114, 273 (1987)"
     ]
   }

Table 5\: oscillator strength integrated over each energy interval \(row\: the interval as printed; x and x\_upper its edges, eV\); Beer\-Lambert photoabsorption, integrated absorption extrapolated to low pressure\. Summed from the original's line values by Chan et al\.

chan\_1993\_co/interval\_12\_14\_present
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "interval_12_14_present",
     "material": "CO",
     "table": "text",
     "quantity": "interval_oscillator_strength",
     "abscissa_unit": "eV",
     "columns": {
       "x_upper": "eV"
     },
     "use": "check"
   }

1 inline points in the source record.

p\. 11\: 'The present estimate for the same energy region \[12\-14 eV\] is 0\.640' \(the Table 5 intervals from 12\.130 to 14\.016 eV sum to 0\.645\)\. An integral of the present spectra\: a check\.

chan\_1993\_co/interval\_12\_14\_berkowitz\_huffman
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "interval_12_14_berkowitz_huffman",
     "material": "CO",
     "table": "text",
     "quantity": "interval_oscillator_strength",
     "abscissa_unit": "eV",
     "columns": {
       "x_upper": "eV"
     },
     "use": "reproduced",
     "reproduced_from": [
       "J. Berkowitz, Photoabsorption, Photoionization and Photoelectron Spectroscopy (Academic Press, New York, 1979), p. 109",
       "R. E. Huffman, J. C. Larrabee and Y. Tanaka, J. Chem. Phys. 40, 2261 (1964)"
     ]
   }

1 inline points in the source record.

p\. 11\: Berkowitz's oscillator strength for 12\-14 eV from Huffman et al\.'s photoabsorption data, 0\.7921; 'about 25% higher than the present result, \.\.\. presumably due to errors in the pressure and/or light intensity measurements'\.

chan\_1993\_co/interval\_12\_14\_berkowitz\_cook
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "interval_12_14_berkowitz_cook",
     "material": "CO",
     "table": "text",
     "quantity": "interval_oscillator_strength",
     "abscissa_unit": "eV",
     "columns": {
       "x_upper": "eV"
     },
     "use": "reproduced",
     "reproduced_from": [
       "J. Berkowitz, Photoabsorption, Photoionization and Photoelectron Spectroscopy (Academic Press, New York, 1979), p. 109",
       "G. R. Cook, P. H. Metzger and M. Ogawa, Can. J. Phys. 43, 1706 (1965)"
     ]
   }

1 inline points in the source record.

p\. 11\: Berkowitz's oscillator strength for 12\-14 eV from Cook et al\.'s photoabsorption data, 0\.8165\.

Formulas
--------

No formulas are recorded.

Corrections
-----------

.. code-block:: text

   [
     {
       "dataset": "a_state_field_1983",
       "row": "4",
       "column": "value",
       "printed": "0.0358",
       "corrected": "0.0258",
       "reason": "Field et al.'s v' = 4 value breaks the column's smooth fall (0.0412, 0.0361, 0.0358, 0.0161 at v' = 2-5) and makes the column sum 0.197, against Field et al.'s total 0.187 in Table 3; with 0.0258 the column sums to 0.187 exactly and lies between the other sources' v' = 4 values (0.0220-0.0258). A misprinted digit.",
       "evidence": "Table images tbl_889679627bd2.jpg (prints 0.0358 at v' = 4, Field et al. column) and tbl_05bec4dbd2ec.jpg (Field et al. 0.187). Sums computed 2026-09-27. The original (Kirby and Cooper 1989) is not in the library."
     },
     {
       "dataset": "intervals_present",
       "row": "12.237-13.364",
       "column": "x",
       "printed": "12.237",
       "corrected": "13.237",
       "reason": "The intervals are contiguous (each starts where the previous ends); the row after 13.115-13.237 is printed 12.237-13.364, which would span 1.1 eV and overlap five other intervals. A misprinted digit for 13.237.",
       "evidence": "Table image tbl_d446b685ddb3.jpg prints '12.237-13.364' between '13.115-13.237' and '13.364-13.452' (checked 2026-09-27)."
     },
     {
       "dataset": "intervals_stark_1991",
       "row": "12.237-13.364",
       "column": "x",
       "printed": "12.237",
       "corrected": "13.237",
       "reason": "The same misprinted interval edge as the present-work column (the row is shared): 13.237.",
       "evidence": "Table image tbl_d446b685ddb3.jpg (checked 2026-09-27)."
     },
     {
       "dataset": "intervals_letzelter_1987",
       "row": "12.237-13.364",
       "column": "x",
       "printed": "12.237",
       "corrected": "13.237",
       "reason": "The same misprinted interval edge as the present-work column (the row is shared): 13.237.",
       "evidence": "Table image tbl_d446b685ddb3.jpg (checked 2026-09-27)."
     },
     {
       "dataset": "intervals_present",
       "row": "15.085-15.296",
       "column": "x_upper",
       "printed": "15.296",
       "corrected": "15.269",
       "reason": "The next interval starts at 15.269 (printed 15.269-15.443), and the intervals are otherwise contiguous; 15.296 and 15.269 are a digit transposition. The strength per unit energy decides which edge is right: with 15.269 the two intervals give 0.244 and 0.247 per eV, between their neighbours' 0.220 and 0.228 and near the low-resolution df/dE there (0.258-0.242 per eV at 15.0-15.5 eV, Table 1); with 15.296 they would give 0.213 and 0.293.",
       "evidence": "Table image tbl_d446b685ddb3.jpg prints '15.085-15.296' then '15.269-15.443' (checked 2026-09-27)."
     }
   ]

Formula corrections, where recorded, appear with their formulas above. Curation notes may also discuss corrections or unresolved interpretation. Consult the :doc:`review register </register>` for the checks and decisions.