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Collisional deactivation of O 2 ( 1 Σ g + )
Author(s) -
Chatha J. P. S.,
Arora P. K.,
Raja Smt. Nalini,
Kulkarni P. B.,
Vohra K. G.
Publication year - 1979
Publication title -
international journal of chemical kinetics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.341
H-Index - 68
eISSN - 1097-4601
pISSN - 0538-8066
DOI - 10.1002/kin.550110209
Subject(s) - chemistry , oxygen , analytical chemistry (journal) , reaction rate constant , quenching (fluorescence) , diffusion , relaxation (psychology) , atomic physics , kinetics , fluorescence , thermodynamics , psychology , social psychology , physics , organic chemistry , chromatography , quantum mechanics
Relaxation rates for O 2 ( 1 Σ g + ) by nonradiative pathways have been determined using the fast‐flow technique. O 2 ( 1 Σ g + ) is formed from O 2 ( 1 Δ g ) by an energy pooling process. O 2 ( 1 Δ g ) is generated by passing purified oxygen through a microwave discharge. Oxygen atoms are removed by distilling mercury vapor through the discharge zone. It has been observed that the wall loss rate for O 2 ( 1 Σ g + ) decreases with increasing pressure of oxygen and thus appears to be diffusion controlled. Quenching rate constants for O 2 , N 2 , and He have been determined and found to be (1.5 ± 0.1) × 10 4 , (1.0 ± 0.05) × 10 6 and (1.2 ± 0.1) × 10 5 l./mol·sec, respectively.