Phys.Rev. C 98, 054321 (2018)

N.Nica, J.C.Hardy, V.E.Iacob, V.Horvat, H.I.Park, T.A.Werke, K.J.Glennon, C.M.Folden, V.I.Sabla, J.B.Bryant, X.K.James, M.B.Trzhaskovskaya

Precise measurement of α_K andα_T for the 39.8-keV E3 transition in ¹⁰³Rh: Test of internal-conversion theory

RADIOACTIVITY ¹⁰³Rh(IT)[from ¹⁰³Ru(β^-) produced in ¹⁰²Ru(n, γ), and ¹⁰³Pd(EC) produced in ¹⁰²Pd(n, γ) at the TRIGA reactor of Texas A and M]; measured Eγ, Iγ, K-x rays, K-shell and total internal conversion coefficients; deduced M4 admixture and mixing ratio for the 39.8-keV isomeric transition in ¹⁰³Rh. Comparison with Dirac-Fock calculations, and results disagree with the theory which ignores the K-shell atomic vacancy. ¹⁰³Ru(β^-)[from ¹⁰²Ru(n, γ), E=thermal]; measured Eγ, Iγ; deduced K-x ray intensity using the known data for multipolarities and mixing ratios of non-isomeric transitions in ¹⁰³Rh from the decay of ¹⁰³Ru. Comparison with previous experimental γ-ray intensities in ¹⁰³Ru decay.

doi: 10.1103/PhysRevC.98.054321