Precise measurement of αK and αT for the 39.8-keV E3 transition in Rh103: Test of internal-conversion theory Academic Article uri icon


  • © 2018 American Physical Society. Neutron-activated sources of Ru103 and Pd103 both share the isomeric first-excited state in Rh103 as a daughter product. From independent measurements of both decays, we have measured the K shell and total internal-conversion coefficients, αK and αT, for the 39.8-keV E3 transition, which de-excites that state in Rh103, to be 141.1(23) and 1428(13), respectively. When compared with Dirac-Fock calculations, our new results disagree with the version of the theory that ignores the K-shell atomic vacancy, which is consistent with our conclusion drawn from a series of measurements on high multipolarity transitions in nuclei with higher Z. Calculations that include the atomic vacancy indicate that the transition actually has a small M4 component with mixing ratio δ=0.023(5).

altmetric score

  • 2.5

author list (cited authors)

  • Nica, N., Hardy, J. C., Iacob, V. E., Horvat, V., Park, H. I., Werke, T. A., ... Trzhaskovskaya, M. B.

citation count

  • 5

publication date

  • November 2018