tu_2002 ======= S\. J\. Tu and J\. B\. Nee, "Absorption spectrum of ozone in the 105\-200 nm wavelength region", Surf\. Rev\. Lett\. 9, 125 \(2002\) `Source record `__ · :doc:`Catalogue ` · :doc:`Review register ` DOI: `10\.1142/s0218625x02002099 `__ **Source kind:** measurement **Recorded technique:** Photoabsorption with synchrotron radiation \(SRRC, Hsinchu\) dispersed by a 1 m Seya monochromator, resolution 0\.08 nm, through a stainless\-steel absorption tube \(Lee and Nee 2000\)\. O3 from an O2 discharge trapped on silica gel and pumped at methanol\-slush temperature to remove O2; 'a small amount of oxygen was always present and affected the absorption measurement\. The absorption due to O2 was later removed by comparing with the previous data' \(pp\. 125\-126\)\. 105\-200 nm \(Fig\. 1 shows 4\-11\.7 eV, 105\-300 nm\)\. **Materials in structured entries:** O3 **Dataset quantities:** absorption\_cross\_section **Contents:** 1 dataset; 0 formulas. Curation notes -------------- Journal pages 125\-128 = PDF pages 1\-4\. Vacuum wavelengths \(105\-200 nm, a vacuum monochromator\)\. Temperature not stated\. 'The accuracy of the cross section was estimated to be about \+\-15 %' \(p\. 126\)\. The cross sections are in figures only \(Fig\. 1, 4\-11\.7 eV; Fig\. 2, 140\-105 nm\), not digitised\. The text gives four approximate values, recorded as inline points of the dataset text\_values \('about' as printed\: a check\)\. The paper's subject is the Rydberg assignment of the 105\-140 nm bands\. Table 1 \(p\. 126, tbl\_db6630bdbb1a, image checked; not extracted, no quantity\)\: the Rydberg transitions 6a1 \-\> 3s, 4s, 5s, 3p, 4p and 4b2 \-\> 3s, 4s, 3p with quantum defects, band wavelengths \(137\.2, 112\.4, 106\.1, 123\.8, 109\.4, 130\.3, 108, 117 nm\) and symmetries, against Mason et al\. \(1996, mason\_1996\), Thunemann et al\. \(1978\) and Padial et al\. \(1981\)\. The Padial column prints '11\.5' nm for 6a1 \-\> 3p \(the image confirms it\)\: not a wavelength in the region \(the column's other values are 107\.8\-138 nm\), presumably a misprint \(121\.5, 111\.5 and 115\.1 are all possible; 121\.5 is already the 4s entry\)\: not corrected\. The text calls the quantum defects 'Table 2' \(p\. 127\); there is no Table 2\. Quantum defects are computed with ionisation energies 12\.52 eV \(IE1\) and 13\.03 eV \(IE2\); the introduction quotes the adiabatic ionisation energy 12\.52 eV and vertical energies 12\.75, 13\.03, 13\.57 eV from the photoelectron literature \(refs\. 3, 6\-11; not extracted, reproductions\)\. Vibrational spacings\: about 650 cm^\-1 \(137\-130 nm, six peaks; the individual spacings 660, 382, 427, 826 cm^\-1\), about 630 cm^\-1 \(127\-117 nm\), about 600 cm^\-1 \(112\-105 nm; the abstract says 622 cm^\-1\)\. The reference list prints ref\. 18 as 'P\. Jeffrey and T\. H\. Dunning, Jr\., J\. Chem\. Phys\. 67, 2290 \(1977\)', the same journal reference as ref\. 14 \(Hay and Dunning\)\. **Recorded bibliographic identity status:** VALIDATED\_WITH\_WARNINGS. This concerns identification of the source; it does not establish the scientific correctness of its contents. Datasets -------- tu\_2002/text\_values ~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "text_values", "material": "O3", "table": "text", "quantity": "absorption_cross_section", "unit": "Mb", "abscissa_unit": "nm", "use": "check", "uncertainty": { "relative": 0.15, "level": "not stated" } } 4 inline points in the source record. Approximate text values, as printed\: 'The first continuum lies at 6\.2\-7\.5 eV, with a maximum cross section of about 1 Mb at 176\.2 nm' \(p\. 126\); 'The absorption cross sections are high in 137\-130 nm, with a maximum value of about 15 Mb' \(p\. 126; no wavelength stated for the maximum, so the row's wavelength is 'not stated' and its id the range\); 'a strong structured continuum with a peak cross section reaching 30 Mb \(at 121\.1 nm\)' \(p\. 127, the 127\-117 nm band\); 'Such a process may be important at 121\.6 nm\. Based on our absorption spectrum, a cross section of 20 Mb is found here' \(p\. 127\)\. Peak values read from the authors' own spectrum at 0\.08 nm resolution, with the O2 absorption subtracted; \+\-15 % \(p\. 126\)\. Temperature 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 ` for the checks and decisions.