Quenching of Cesium Resonance Radiation by Helium

Autor:	J. N. Dodd, E. A. Enemark, Alan Gallagher
Rok vydání:	1969
Předmět:	Quenching (fluorescence) chemistry Resonance radiation Caesium Analytical chemistry Measure (physics) General Physics and Astronomy chemistry.chemical_element Physical and Theoretical Chemistry Atomic physics Helium Quenching rate
Zdroj:	The Journal of Chemical Physics. 50:4838-4842
ISSN:	1089-7690 0021-9606
DOI:	10.1063/1.1670978
Popis:	Using the phase‐shift technique to measure excited‐state lifetimes, upper limits of 1.5 × 10−14 cm3/sec and 3 × 10−14 cm3/sec have been established for the Cs(62P1/2re3/2) + He → Cs(62S1/2) + He quenching rate constants at 350° and 820°K. (In “cross‐section” units these are equivalent to 10−19 cm2 upper limits.) The natural lifetimes were measured to be 30.8 ± 1.5 × 10−9 sec and 35.2 ± 1.5 × 10−9 sec for the Cs 62P3/2 and 62P1/2 states.
Databáze:	OpenAIRE
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