Magnetic dipole transition rates from measured lifetimes of levels of Be-like and B-like argon ions
Abstract
The lifetimes of the 1s(2)2s2p P-3(2) level of Ar XV and 1s(2)2s(2)2p P-2(3/2) of Ar XIV have been measured using metastable Ar14+ and Ar13+ ions produced by an electron cyclotron resonance ion source, which were subsequently separately captured into a Kingdon ion trap. The lifetime results are tau(Ar XV, 2s2p P-3(2)) = 13.4(7) ms and tau(Ar XIV,2p P-2(3/2)) = 9.12(18) ms. Transition rates derived from the measured lifetimes differ significantly from both relativistic and nonrelativistic calculations of the 2s2p P-3(1)-P-3(2) M1 transition rate of Ar XV, but are in reasonable agreement with calculations for the 2p P-2(1/2)-P-2(3/2) M1 rate of Ar XIV. [S1050-2947(98)07108-X]
Description
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BERYLLIUM ISOELECTRONIC SEQUENCESPECTRAL-LINE INTENSITIES
DIRAC-FOCK
CALCULATION
FORBIDDEN LINES
ATOMIC DATA
C-III
Optics
Physics, Atomic, Molecular and Chemical