Precision measurement of the lifetime of the 1s2sthinsp{sup 3}S{sub 1} metastable level in heliumlike O{sup 6+}

Journal Article · Wed Jul 01 00:00:00 EDT 1998 · Physical Review A

DOI:https://doi.org/10.1103/PhysRevA.58.238· OSTI ID:638776

Crespo Lopez-Urrutia, J R; Beiersdorfer, P; Widmann, K ^[1]; Savin, D W ^[2]

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1. Department of Physics and Space Technology, Lawrence Livermore National Laboratory, Livermore, California 94550 (United States)
2. Department of Physics and Columbia Astrophysics Laboratory, Columbia University, New York, New York 10025 (United States)

The lifetime of the 1s2sthinsp{sup 3}S{sub 1} level of the He-like O{sup 6+} ion has been measured using the Electron Beam Ion Trap in the magnetic trapping mode. A value of 956{sub {minus}4}{sup +5} {mu}s is found, which corresponds to a radiative transition rate of 1046{sub {minus}5}{sup +4} s{sup {minus}1} for the magnetic dipole transition to the 1s{sup 2}thinsp{sup 1}S{sub 0} ground state. This value is in excellent agreement with recent theoretical predictions and distinguishes among different treatments of negative energy states and correlation in multiconfiguration Dirac-Fock calculations. {copyright} {ital 1998} {ital The American Physical Society}

• OSTI ID: 638776
• Journal Information: Physical Review A, Vol. 58, Issue 1; Other Information: PBD: Jul 1998
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
OXYGEN
CATIONS
LIFETIME
OXYGEN IONS
METASTABLE STATES
ELECTRON-ION COLLISIONS
MAGNETIC DIPOLES
HARTREE-FOCK METHOD
ELECTRON BEAMS
TRAPPING
TRAPS
M1-TRANSITIONS