Weak- and hyperfine-interaction-induced 1s2s 1S0 → 1s2 1S0 E1 transition rates of He-like ions<xref ref-type="fn" rid="cpb141916fn1">*</xref>

Weak- and hyperfine-interaction-induced 1s2s ¹S₀ → 1s^{2 1}S₀ E1 transition rates of He-like ions*

Radžiūtė Laima^a), Gaidamauskas Erikas^a), Gaigalas Gediminas^a)†, Li Ji-Guang^b)‡, Dong Chen-Zhong^c), Per Jönsson^d)

Energy level and transition scheme for He-like ion. hfq. E1 represents hyperfine E1 electrical dipole-induced transition, hfq. M1 hyperfine M1 magnetic dipole-induced transition, and weak-induced weak- and hyperfine-induced E1 electrical dipole transition, 2E1 two-photon electric dipole transition.