(148g,m)Pm: evaluation of the decay schemes for two important reactor poisons

M A Kellett; M-M Bé

doi:10.1016/j.apradiso.2013.11.009

(148g,m)Pm: evaluation of the decay schemes for two important reactor poisons

Appl Radiat Isot. 2014 May:87:95-100. doi: 10.1016/j.apradiso.2013.11.009. Epub 2013 Nov 18.

Authors

M A Kellett¹, M-M Bé²

Affiliations

¹ CEA, LIST, LNE-LNHB, CEA Saclay, F-91191 Gif-sur-Yvette, France. Electronic address: mark.kellett@cea.fr.
² CEA, LIST, LNE-LNHB, CEA Saclay, F-91191 Gif-sur-Yvette, France.

PMID: 24296069
DOI: 10.1016/j.apradiso.2013.11.009

Abstract

During reactor operation (148g)Pm and (148m)Pm are formed in large quantities from thermal neutron capture on the fission product (147)Pm. Subsequent neutron capture reactions, on the (148)Pm ground state and isomer, have cross sections differing by a factor of 5 and so precise knowledge of their decay properties is vitally important. New decay scheme evaluations using the DDEP methodology for (148g)Pm and (148m)Pm are presented. The complete data tables and detailed evaluator comments are available through the DDEP website.

Keywords: (148g)Pm; (148m)Pm; DDEP; Decay data evaluation; Isomeric transition; β(−) decay.