brion_1993 ========== J\. Brion, A\. Chakir, D\. Daumont, J\. Malicet and C\. Parisse, "High\-resolution laboratory absorption cross section of O3\. Temperature effect", Chem\. Phys\. Lett\. 213, 610 \(1993\) `Source record `__ · :doc:`Catalogue ` · :doc:`Review register ` DOI: `10\.1016/0009\-2614\(93\)89169\-i `__ **Source kind:** measurement **Recorded technique:** The device of daumont\_1992 \(their ref\. \[6\]\)\: quartz absorption tubes 32\.85 and 815\.0 mm long, ozone partial pressure about 1\-600 Torr \(optical densities near unity\), Jobin\-Yvon THR 1500 and HR 640 spectrometers, 'In both cases the spectral bandwidth is about 0\.01 nm'; for low temperatures a cryostat with cooled methanol flow \(fluctuation within 0\.1 K, below 0\.3 K along the cell\); sigma = D / \(2 l \[\(p\_O2\)\_i \- p\_T\]\) x RT/N, the ozone pressure from the total pressure during decomposition \(p\. 612\)\. **Materials in structured entries:** O3 **Dataset quantities:** absorption\_cross\_section **Contents:** 1 dataset; 0 formulas. Curation notes -------------- Identity checked against the first page \(PDF page 1, journal p\. 610\)\: Brion, Chakir, Daumont, Malicet and Parisse, Chem\. Phys\. Lett\. 213, 610 \(1993\)\. Journal pages 610\-612 = PDF pages 1\-3\. O3 only\. A three\-page letter announcing the Reims \(BDM\) temperature\-dependent cross sections; the full account is malicet\_1995 \(same data, same group\)\. Facts for the data files\: \- Temperatures\: 218, 228, 243 and 295 K over 195\-345 nm, and 273 K over 300\-345 nm \(p\. 610\); p\. 612 says 'at five temperatures between 295 and 218 K in the spectral range 190\-350 nm \(273 K\: 300\-345 nm\) in steps of 0\.01 nm' \(190\-350 against 195\-345 on p\. 610\: the range of the files is not unambiguous\)\. \- Resolution and sampling\: spectral bandwidth about 0\.01 nm; steps of 0\.01 nm \(p\. 612\)\. \- Wavelengths\: medium not stated \(daumont\_1992's calibration is in air\)\. \- Absolute scale\: the pressure method \(formula above\), not normalised; at 253\.65 nm and ambient temperature '\(113\.0 \+\- 1\.1\) x 10^\-19 cm^2 is close to the new value determined by Mauersberger et al\.\: \(113\.6 \+\- 0\.5\) x 10^\-19 cm^2 \.\.\. this agreement confirms the validity of our absolute measurements' \(p\. 611\)\. \- Uncertainty\: 'the total error has been estimated \[daumont\_1992\] as 1\.3% in the Hartley band and 1\.3% to 2\.5% in the Huggins bands' \(p\. 612; level not stated\)\. \- The published file\: 'now available on floppy disks' \(p\. 612\)\. Temperature effect \(p\. 611\)\: at 253\.65 nm the cross section increases by about 1 % from 295 to 218 K; negligible in the 210 nm window; strong in the Huggins bands, particularly between the peaks; the structure shifts about 0\.05 nm to shorter wavelengths at 218 K\. Comparisons \(p\. 611\)\: Molina and Molina better than 1 % near 210 nm, 2\-3 % above 230 nm; Bass and Paur 1\-2 % after recalibration to Mauersberger et al\. and a shift of their wavelength scale by about 0\.05 nm towards the UV\. No table; Figs\. 1\-2 only\. **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\_1993/t295\_253 ~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "t295_253", "material": "O3", "table": "text", "quantity": "absorption_cross_section", "unit": "cm2", "scale": 1e-19, "abscissa_unit": "nm", "wavelength_medium": "standard_air", "use": "reproduced", "reproduced_from": [ "daumont_1992" ], "uncertainty": { "column": true, "level": "not stated" }, "parameters": { "temperature_k": 295.0 } } 1 inline points in the source record. p\. 611\: 'At ambient temperature, our sigma value \(113\.0 \+\- 1\.1\) x 10^\-19 cm^2' at 'the mercury line wavelength \(lambda = 253\.65 nm\)'\: daumont\_1992's method\-1 value \(113\.05 \+\- 1\.1\), rounded\. Medium not stated \(air, as daumont\_1992\)\. Ambient temperature \(295 K, daumont\_1992\)\. 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.