Photoactivation of Ta-180(m) and its implications for the nucleosynthesis of nature's rarest naturally occurring isotope

Authors
Belic, D Arlandini, C Besserer, J de Boer, J Carroll, JJ Enders, J Hartmann, T Kappeler, F Kaiser, H Kneissl, U Loewe, M Maier, HJ Maser, H Mohr, P von Neumann-Cosel, P Nord, A Pitz, HH Richter, A Schumann, M Volz, S Zilges, A
Citation
D. Belic et al., Photoactivation of Ta-180(m) and its implications for the nucleosynthesis of nature's rarest naturally occurring isotope, PHYS REV L, 83(25), 1999, pp. 5242-5245
Citations number
31
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
00319007 → ACNP
Volume
83
Issue
25
Year of publication
1999
Pages
5242 - 5245
Database
ISI
SICI code
0031-9007(199912)83:25<5242:POTAII>2.0.ZU;2-J
Abstract
The depopulation of the quasistable isomer in Ta-180 with J(pi) = 9(-) at E -x = 75 keV by resonant photoabsorption was investigated with intense brems strahlung. The results indicate a dramatic acceleration of the isomer decay to the short-lived J(pi) = 1(+) ground state under stellar s-process condi tions. The consequences for a possible nucleosynthesis of nature's rarest i sotope Ta-180. within the s process are discussed.