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arXiv · 1704.03074

Precise measurement of alpha_K and alpha_T for the 109.3-keV M4 transition in 125Te: Test of internal-conversion theory

N. Nica·J. C. Hardy·V. E. Iacob·T. A. Werke·C. M. Folden III·K. Ofodile·M. B. Trzhaskovskaya
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Abstract

We have measured the K-shell and total internal conversion coefficients (ICCs), alpha_K and alpha_T, for the 109.3-keV M4 transition in 125Te to be 185.0(40) and 350.0(38), respectively. Previously this transition's ICCs were considered anomalous, with alpha values lying below calculated values. When compared with Dirac-Fock calculations, our new results show good agreement. The alpha_K result agrees well with the version of the theory that takes account of the K-shell atomic vacancy and disagrees with the one that does not. This is consistent with our conclusion drawn from a series of high multipolarity transitions.

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N. Nica, J. C. Hardy, V. E. Iacob, T. A. Werke, C. M. Folden III, K. Ofodile, M. B. Trzhaskovskaya. 2017-04-10. Precise measurement of alpha_K and alpha_T for the 109.3-keV M4 transition in 125Te: Test of internal-conversion theory. https://doi.org/10.1103/physrevc.95.064301

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