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Phys. Rev. C 77, 034306 (2008) [8 pages]

Internal conversion coefficients in 134Cs, 137Ba, and 139La: A precise test of theory

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N. Nica*, J. C. Hardy, V. E. Iacob, and C. Balonek†
Cyclotron Institute, Texas A&M University, College Station, Texas 77843, USA

M. B. Trzhaskovskaya
Petersburg Nuclear Physics Institute, Gatchina, RU-188300, Russia

Received 14 January 2008; published 14 March 2008

Recently we measured the ratio of K-shell internal conversion coefficients, αK, for the 127.5-keV E3 transition in 134Cs and the 661.7-keV M4 transition in 137Ba. We here report a measurement of the 165.9-keV M1 transition in 139La, based on which we convert our earlier ratio measurement into individual αK values for the transitions in 134Cs and 137Ba. These results continue to confirm the Dirac-Fock calculations of internal conversion coefficients that incorporate the atomic K-shell vacancy.

© 2008 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevC.77.034306
DOI:
10.1103/PhysRevC.77.034306
PACS:
23.20.Nx, 27.60.+j

*nica@comp.tamu.edu

†REU summer student from State University of New York at Buffalo, Buffalo, NY.

‡http://cyclotron.tamu.edu/

 
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