Radiative Decay of the $2 {}^{3}S_{1}$ and $2 {}^{3}P_{2}$ States of Heliumlike Vanadium ( $Z = 23$ ) and Iron ( $Z = 26$ )

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16 September 1974

journal article
research article
Published by American Physical Society (APS) in Physical Review Letters

Vol. 33 (12) , 676-680
https://doi.org/10.1103/physrevlett.33.676

Abstract

Lifetimes of the

M 1

decay

2 {}^{3}S_{1} \to 1 {}^{1}S_{0}

and of the decay

2 {}^{3}P_{2} \to 1 {}^{1}S_{0}

have been measured in the two-electron ions

V^{+ 21}

and

{Fe}^{+ 24}

. The measured lifetimes are

τ (2 {}^{3}S_{1}) = 16.9 (7)

nsec for

V^{+ 21}

and

τ (2 {}^{3}S_{1}) = 4.8 (6)

nsec for

{Fe}^{+ 24}

. The

2 {}^{3}P_{2}

lifetimes are compared with a calculation that considers relativistic corrections and hyperfine-structure effects. It is found that for

V^{+ 21}

, hyperfine effects contribute appreciably to the lifetime. For

{Fe}^{+ 24}

we obtain

τ (2 {}^{3}P_{2}) = 0.11 (2)

nsec.

Keywords

This publication has 18 references indexed in Scilit:

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