Lifetime of the 2 sup 3 S sub 1 state of heliumlike sup 79 Br sup 33+

Journal Article · Sun Apr 01 04:00:00 EDT 1990 · Physical Review, A (General Physics); (USA)

DOI:https://doi.org/10.1103/PhysRevA.41.4109· OSTI ID:7188706

Dunford, R W; Church, D A; Liu, C J; Berry, H G; Raphaelian, M L.A. ^[1]; Hass, M ^[2]; Curtis, L J ^[3]

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1. Physics Division, Argonne National Laboratory, Argonne, Illinois 60439 (USA)
2. Nuclear Structure Research Laboratory, University of Rochester, Rochester, New York 14627 (USA)
3. Department of Physics, University of Toledo, Toledo, Ohio 43606 (USA) Astronomy, University of Toledo, Toledo, Ohio 43606 (USA)

We report a measurement of the lifetime of the 2{sup 3}{ital S}{sub 1} level in heliumlike {sup 79}Br{sup 33+}. Our result is {tau}{sup exp}(2 {sup 3}{ital S}{sub 1})=224.1(7.1) ps. This agrees with the theoretical calculation of 230(2) ps and provides a test of {ital O}({ital Z}{sup 2}{alpha}{sup 2}) corrections to the lifetime. The experimental error is dominated by uncertainties in the correction required to account for long-lived cascades from highly excited states.

• Research Organization: Argonne National Laboratory (ANL), Argonne, IL
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 7188706
• Journal Information: Physical Review, A (General Physics); (USA), Journal Name: Physical Review, A (General Physics); (USA) Vol. 41:7; ISSN PLRAA; ISSN 0556-2791
• Country of Publication: United States
• Language: English

Related Subjects

640302* -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
BROMINE IONS
CHARGED PARTICLES
DATA
ENERGY LEVELS
EXPERIMENTAL DATA
INFORMATION
IONS
LIFETIME
MULTICHARGED IONS
NUMERICAL DATA
S STATES
TIME-OF-FLIGHT METHOD