Cross sections for the quenching of exeted \(\mathrm{Ca}_{\mathrm{a}}\left(4 \mathrm{~s} \mathrm{p}^{\mathrm{p}} \mathrm{p}_{1}\right)\) by several gases, determuned drectly by a pulsed lacer fechinque, are compared with those of the analogous ' \(P_{1}\) states of other group ila and Ifb metal atom
Determination of the absolute chemiluminescence cross section and photon yield for the Ca(4s4p 3P) + N2O reaction
โ Scribed by Paul J. Dagdigian
- Publisher
- Elsevier Science
- Year
- 1978
- Tongue
- English
- Weight
- 610 KB
- Volume
- 55
- Category
- Article
- ISSN
- 0009-2614
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โฆ Synopsis
A novel method for determining absolute chemihuninescence cross sections without knowledge of the absolute detection sensitivity is described for reactions involving eIectronicaUy excited reactants. A study of the Ca(4s4p 3P) + NzO reaction under singie-collkion conditions is presented, and a photon yield of 10 3~ 3% is determined with the help of a measured beam attenuation cross section.
๐ SIMILAR VOLUMES
Ra?e constants for the reaction of 0(3P) atoms with CaH4, CaHB and NO(M = NpO) have been measured over the temperature range 300-392ยฐK using a modulation-phase shifi technique. The Arrhenius expressions obtained are: C2H4, k2 = 3.37 X 10' exp[-(1270 -f 200)/RT] liter mole-' see-', CJH~, kz = 2.08 x
Absolute rate constants for the reaction of SiH4 with O(3P) atoms and OH radicals have been determined over the temperature range 297"438'K using flash photolysis-NO:! chemiluminescence and flash photolysis-resonance fluorescence techniques, respectively. The Arrhenius expressions obtained are wher