2-PHOTON DECAY OF THE 2 S-1(0) STATE IN HE-LIKE BROMINE

Authors
DUNFORD RW BERRY HG CHENG S KANTER EP KURTZ C ZABRANSKY BJ LIVINGSTON AE CURTIS LJ
Citation
Rw. Dunford et al., 2-PHOTON DECAY OF THE 2 S-1(0) STATE IN HE-LIKE BROMINE, Physical review. A, 48(3), 1993, pp. 1929-1936
Citations number
53
Categorie Soggetti
Physics
Journal title
Physical review. A → ACNP
ISSN journal
10502947
Volume
48
Issue
3
Year of publication
1993
Pages
1929 - 1936
Database
ISI
SICI code
1050-2947(1993)48:3<1929:2DOT2S>2.0.ZU;2-H
Abstract
We report a measurement of the lifetime of the 1s2s S-1(0) state in tw o-electron Br33+. This state decays to the 1s2 S-1(0) ground state onl y by the simultaneous emission of two photons. Ions in the 1s2s S-1(0) level are produced by excitation of energetic bromine ions in a thin carbon foil. The lifetime is determined by measuring the change in the Tate of two-photon coincidences as a function of the foil-detector se paration. The lifetime measurement yields 39.32(32) ps in agreement wi th a theoretical value of 39.63(16) ps.