出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：Partial photoneutron cross sections for 181Ta(g,n)180Tam(9−) were measured with laser Compton
scattering g rays. The partial cross section, which reflects selective g transitions in 180Ta leading
to the isomeric state, cast new light into the spin- and parity-dependent nuclear level density of
180Ta. Essentially the same selective g transition is expected in neutron capture on 179Ta leading
to 180Tam(9−). The weak s-process branching to the only naturally occurring isomer 180Tam is
discussed.
