Phys.Rev. C 89, 014303 (2014)

N.Nica, J.C.Hardy, V.E.Iacob, M.Bencomo, V.Horvat, H.I.Park, M.Maguire, S.Miller, M.B.Trzhaskovskaya

Precise measurement of α_K for the 65.7-keV M4 transition in ¹¹⁹Sn: Extended test of internal-conversion theory

RADIOACTIVITY ¹¹⁹Sn(IT)[from ¹¹⁸Sn(n, γ)]; measured Eγ, Iγ, E(x rays), I(x rays); deduced K-shell internal conversion coefficient of 65.7-keV M4 transition. Comparisons with theoretical conversion coefficient from Dirac-Fock relativistic calculation with and without K-shell atomic vacancy, and with previous measurements.Evidence of support for inclusion of atomic vacancy from comparison of precisely measured conversion coefficients with theoretical calculations for E2, E3 and M4 isomeric transitions in 20 cases including ¹¹⁹Sn, ¹³⁴Cs, ¹³⁷Ba, ¹⁹³Ir and ¹⁹⁷Pt.

doi: 10.1103/PhysRevC.89.014303