EIectroniUIlY excited iodine atoms, 1(5'P,,,), have been monitored using time xsolved atomic resmancc fluorescence. Rate data t'or quenching by C3Hs and CD4 ax presented.
Collisional quenching of excited iodine atoms I(5p52P1/2) BY I2
β Scribed by D.H. Burde; R.A. McFarlane; J.R. Wiesenfeld
- Publisher
- Elsevier Science
- Year
- 1975
- Tongue
- English
- Weight
- 444 KB
- Volume
- 32
- Category
- Article
- ISSN
- 0009-2614
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β¦ Synopsis
The rate of CoLlisional quenching or I(5p' *P ,,$ by I2 has been determined u&g time-resolved atomic absorption spectroscopy following tunable laser photoiysis of molecular iodine as (3.6 + 0.3) X 10-l' cm3 mole&k-' s-l. Disaepancies between this and earlier results are discussed.
π SIMILAR VOLUMES
A method is described for the phot~le~c me~~ment of the time-resolved atomic absorption by electronically excited iodine atoms, 1(5'Prn), generated by pulsed irradiation-A kinetic investigation of the decay of these excited atoms yields a vaIlle for the quenching rate constant by mo?ecuku oxygen, th
When traces of iodine are added to discharged oxygen from which atomic oxygen has been removed, the equiLihrium F,/2) + 02?;r;i) , IS rapidly eatublished. Comparison of the intensities of emission by 02('Ag) and l&~/z] yields a radiative lif+Wme of 0.17a0.04 set for the Iatkr.
Relaxation rate constants for the collisional deactivation of I (2Pl,z) by halogen cyanides were measured by time resolved atomic absorption. The values obtained were (1.2 -1-0.1) x cm3 molecule-' s-' for ClCN, BrCN, and ICN, respectively. Quenching efficiencies are discussed in view of the stabilit
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The fraction of electronically excited iodine atoms, I(5 2P,/&, formed in the broadband flash photolysis of several alkyl iodides has been determined using time-resolved static absorption spectroscopy. By monitoring the temporal proftie of the ground state, I(5 \*Pa/z), following the photolytic puls