brion_1998
==========

J\. Brion, A\. Chakir, J\. Charbonnier, D\. Daumont, C\. Parisse and J\. Malicet, "Absorption spectra measurements for the ozone molecule in the 350\-830 nm region", J\. Atmos\. Chem\. 30, 291 \(1998\)

`Source record <https://github.com/LupoLab/optmat/blob/main/src/optmat/data/sources/brion_1998.toml>`__ · :doc:`Catalogue </the-data/sources>` · :doc:`Review register </register>`

DOI: `10\.1023/a\:1006036924364 <https://doi.org/10.1023/a%3A1006036924364>`__

**Source kind:** measurement

**Recorded technique:** The Reims method \(daumont\_1992, malicet\_1995\)\: Beer\-Lambert law for a perfect gas, the ozone partial pressure P\_O3 = 2\[\(P\_O2\)\_i \- P\_T\] from the total pressure \(MKS Baratron, Delta P / P better than 0\.1 %\) during decomposition; O3 made as Griggs \(1968\); trace gases below 0\.1 % \(FTIR\)\. Monochromatic light '\(0\.02 nm FWHM\)' from a Jobin\-Yvon HR 640 monochromator, split into working and reference beams; a 1 m coolable stainless\-steel multipass cell, path lengths up to 92 m, optical density 0\.5\-2; 295 K \(whole range\) and 218 K \(515\-650 nm\), Pt sensors \(0\.05 K\), gradients below 0\.3 K; scans added, standard deviation between scans 0\.9\-2 % \(pp\. 292\-293\)\.

**Materials in structured entries:** O3

**Dataset quantities:** absorption\_cross\_section

**Contents:** 4 datasets; 0 formulas.

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

Identity checked against the first page \(PDF page 1, journal p\. 291\)\: Brion, Chakir, Charbonnier, Daumont, Parisse and Malicet, J\. Atmos\. Chem\. 30, 291\-299 \(1998\)\. Journal pages 291\-299 = PDF pages 1\-9\. O3 only\. The paper prints decimal commas\.

Facts for the data files \(the Reims/BDM visible set\)\: \- Range and temperatures\: 350\-830 nm at 295 K; 515\-650 nm at 218 K \(pp\. 291\-293\)\. \- Resolution and sampling\: 0\.02 nm FWHM \(p\. 292; 'Delta lambda \<= 0,02 nm FWHM', p\. 298\); 'determined for the whole 350\-830 spectral region by steps of 0\.01 nm' \(p\. 294\)\. \- Wavelengths\: medium not stated \(the group's calibration is in air, daumont\_1992; Table II's lines, He\-Ne laser and mercury lamp lines, are given as air values\: recorded as standard air, TC\-186\)\. Wavelength uncertainty 0\.01 nm \(p\. 294\)\. \- Absolute scale\: the pressure method, not normalised\. \- Uncertainty \(Table I, image checked, p\. 295\)\: optical density 1 % \(420\-830 nm\), 1\-3 % \(350\-420 nm\); optical path 0\.1 %; ozone pressure 0\.1 %; temperature 0\.02 % \(295 K\), 0\.15 % \(218 K\); impurities \< 0\.1 %; wavelength 0\.1 % \(420\-830 nm\), 0\.1\-0\.7 % \(350\-420 nm\); total systematic error about 1\.5 % \(420\-830 nm\), 1\.5\-4 % \(350\-420 nm\); random error \(RMS\) 0\.9\-2 %\. Text \(p\. 296\)\: 'the total uncertainty is about 1,5% for the Chappuis band region and about 4% near the absorption minimum'\. Level not stated\. \- The published file\: 'available on request to the authors either by e\-mail, or on floppy disk' \(p\. 294\)\.

Temperature effect \(p\. 298\)\: 515\-650 nm, the 218 and 295 K spectra overlap except near the two maxima, where the cross section increases by about 1 % as the temperature decreases; at 520 nm and 218 K below 1 % \(against Burkholder and Talukdar's 4 %\)\.

Comparisons \(pp\. 296\-297\)\: Vigroux, Griggs, Penney and Anderson agree within 1 % but are 10 % above Inn and Tanaka and 4\-5 % above Amoruso; Anderson and Mauersberger \(1993\) in the Wulf band 2\-5 % below this work, at 3\.1 nm FWHM\. Table II's deviation column \(A&M or Hearn against this work\) is derived and not extracted; it reproduces from the printed values to 0\.02 % except at 543\.516 nm \(\-1\.51 % against the printed \-1\.53\) and 594\.096 nm \(\-2\.41 % against \-2\.47\), presumably from unrounded values\.

Datasets\: Table II \(image checked\) and the text values; the Table II caption gives sigma x 10^21 cm^2, scale 1e\-21 to cm^2\. This work's values are points of the data file\: 'check'\.

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

Datasets
--------

brion\_1998/present
~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "present",
     "material": "O3",
     "file": "O3/brion_1998__present.csv",
     "table": "tbl_cc4f708ad271",
     "quantity": "absorption_cross_section",
     "unit": "cm2",
     "scale": 1e-21,
     "abscissa_unit": "nm",
     "wavelength_medium": "standard_air",
     "use": "check",
     "uncertainty": {
       "column": true,
       "level": "not stated"
     },
     "parameters": {
       "temperature_k": 295.0
     }
   }

Table II 'Present work' at six lines \(543\.516\-632\.816 nm\), with the printed \+\- \(1\.5 %, the total systematic error; level not stated\) as sigma; 295 K\. Points of the 295 K spectrum\: a check\.

brion\_1998/anderson\_mauersberger\_1992
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "anderson_mauersberger_1992",
     "material": "O3",
     "file": "O3/brion_1998__anderson_mauersberger_1992.csv",
     "table": "tbl_cc4f708ad271",
     "quantity": "absorption_cross_section",
     "unit": "cm2",
     "scale": 1e-21,
     "abscissa_unit": "nm",
     "wavelength_medium": "standard_air",
     "use": "reproduced",
     "reproduced_from": [
       "Anderson, S. M. and Mauersberger, K., 1992: Geophys. Res. Lett. 19, 933"
     ],
     "uncertainty": {
       "column": true,
       "level": "not stated"
     }
   }

Table II 'Anderson and Mauersberger' at five He\-Ne laser lines, with their \+\-; temperature not stated here\. The original is not in the library\.

brion\_1998/hearn\_1961
~~~~~~~~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "hearn_1961",
     "material": "O3",
     "file": "O3/brion_1998__hearn_1961.csv",
     "table": "tbl_cc4f708ad271",
     "quantity": "absorption_cross_section",
     "unit": "cm2",
     "scale": 1e-21,
     "abscissa_unit": "nm",
     "wavelength_medium": "standard_air",
     "use": "reproduced",
     "reproduced_from": [
       "Hearn, A. G., 1961: Proc. Phys. Soc. London 78, 932"
     ],
     "uncertainty": {
       "column": true,
       "level": "not stated"
     }
   }

Table II 'Hearn' at 576\.96 nm \(a mercury line\), 4\.76 \+\- 0\.09; temperature not stated here\. The original is not in the library\.

brion\_1998/text
~~~~~~~~~~~~~~~~

.. code-block:: text

   {
     "id": "text",
     "material": "O3",
     "table": "text",
     "quantity": "absorption_cross_section",
     "unit": "cm2",
     "scale": 1e-21,
     "abscissa_unit": "nm",
     "wavelength_medium": "standard_air",
     "use": "check",
     "uncertainty": {
       "relative": 0.015,
       "level": "not stated",
       "relative_rows": {
         "minimum_377.5": 0.04
       }
     },
     "parameters": {
       "temperature_k": 295.0
     }
   }

3 inline points in the source record.

p\. 291\: the Chappuis band's 'two maximum absorptions \(sigma = 4\.83 x 10^\-21 cm^2 at 575 nm and sigma = 5\.23 x 10^\-21 cm^2 at 603 nm\)'; p\. 294\: 'A deep minimum is shown, for the first time at 377,5 nm \(sigma = 4,4 x 10^\-24 cm^2\)', entered as 0\.0044 x 10^\-21 \(page images checked\)\. 295 K\. The maxima's wavelengths are rounded to the nanometre; points of the spectrum\: a check\. About 1\.5 % at the maxima, about 4 % near the minimum \(p\. 296; level not stated\)\.

Formulas
--------

No formulas are recorded.

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

No dataset errata are recorded in this source record.

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.