Analysis of probabilities for nuclear excitation by near-resonant electronic transitions

摘要

Theoretical results are presented for nuclear excitation of low-lying isometric states of Au-197, Os-189 and Np-237 by near-resonant electronic deexcitation process known as NEET. A detailed comparison is made between current and previous theoretical results in order to clarify a number of anomalies. For (197)AU, the only case in which the current experimental precision appears to be sufficient to provide a stringent test of theory, the theoretical result for the NEET probability is P-NEET = 3.6 x 10(-8). This is a factor of three lower than previous theoretical results and reduces the difference between theory and the recent experimental result, P-NEET = (5.0 +/- 0 6) x 10(-8), to a level of approximately 2 sigma. (C) 2001 Elsevier Science B.V. All rights reserved. [References: 28]