A direct measurement of the O(1D) quantum yields from the photodissociation of ozone between 300 and 328 nm

Relative quantum yields for O1D production in the photolysis of ozone between 301 and 336 nm: evidence for the participation of a spin-forbidden channel

“…Recent measurements of Ball and coworkers [17][18][19] show that the yield of O2(~A) is significant out to 325 nm. In recent, unpublished data [20] they report O I D yields which broadly agree with the O2(IA) yields. In this work a (2 + 1) REMPI technique is used to directly monitor O 1D.…”

Overview and conclusions of the International Photolysis Frequency Measurement and Modeling Intercomparison (IPMMI) study

“…[56] For ozone the cross-section data are in excellent agreement [Molina and Molina, 1986;Bass and Paur, 1985;Daumont et al, 1992;Malicet et al, 1995]. In recent years, there has been presented strong evidence for larger photolysis quantum yields (to O( 1 D)) at wavelengths greater than $312 nm than had been previously inferred [e.g., Michelsen et al, 1994;Müller et al, 1995;Shetter et al, 1996;Talukdar et al, 1997Talukdar et al, , 1998] (see evaluation of Matsumi et al [2002]).…”

“…The absorption cross sections reported by Molina and Molina [1986], Bass and Paur [1985], Daumont et al [1992], and Malicet et al [1995] are in good agreement, as shown in Figure A1d. Some differences in the absolute values of the s(O 3 ) measured at a given wavelength are evident in Figure A2a where the values (placed in 1-nm bins) measured by Daumont et al [1992] and Malicet et al [1995] (blue curve in Figure A2a) and by Bass and Paur [1985] (red curve in Figure A2a), are ratioed to those measured by Molina and Molina [1986]. The ratios averaged over the whole wavelength range are close to unity s(O 3 ) Daumont [62] The temperature dependence observed in s(O 3 ) at the short wavelengths is relatively small, but in the longwavelength, highly structured region of the absorption spectrum the effect of temperature is pronounced as shown in Figure A2b.…”

Quantum yields for production of O(1D) in the ultraviolet photolysis of ozone: Recommendation based on evaluation of laboratory data

“…Effects of changes in the Doppler profile of O( 1 D ) will depend on the bandwidth of the excitation laser. Takahashi et al [1998a] found that it was necessary to correct their O( 1 D ) yield measurements by up to 50% to compensate for Doppler broadening at the longest wavelengths at which they made measurements, whereas Ball et al [1997] concluded that their measurements were unaffected by such effects.…”