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 · Catalogue · 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

{
  "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 review register for the checks and decisions.