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High-Lying 2+ States in Sm-148 Observed in the Decay of 5- Eu-148

Authors
  • Toth, K.S.
  • Newman, E.
Publication Date
Jan 01, 1973
Identifiers
DOI: 10.1103/PhysRevC.7.460
OAI: oai:inspirehep.net:88211
Source
INSPIRE-HEP
License
Unknown
External links

Abstract

Buss and Smither recently studied levels in Sm148 by investigating the thermal-capture reaction Sm147(n,γ). Of the 32 levels that they considered (many of these were proposed as new states) only 18 have been observed in Eu148 decay. Our investigation of the Eu148 decay scheme has produced strong corroborative evidence for the existence of seven additional states proposed by Buss and Smither. Their energies (in keV) and spin assignments are as follows: 1454.6, 2+; 1664.2, 2+; 1903.8, 3+ or 4+; 2173.2, 2+; 2339.4, 2+ or 3−; 2390.0, 3+; and 2570.5, 2+. The 1454.6-keV level is apparently the second 2+ level expected from energy-level systematics to be at ∼1.4 MeV, but for which no conclusive evidence has been available.

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