Gamow-Teller strength deduced from Fe54(n,p) 54Mn cross sections at 298 MeV

M. C. Vetterli*, O. Häusser, W. P. Alford, D. Frekers, R. Helmer, R. Henderson, K. Hicks, K. P. Jackson, R. G. Jeppesen, C. A. Miller, M. A. Moinester, K. Raywood, S. Yen

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Gamow-Teller (GT) strength has been extracted from cross sections for the reaction Fe54(n,p) 54Mn at 0°, 2.5°, 5°, 8°, and 12°, and for an incident energy of 298 MeV. This determination of the + GT strength S+ allows for the first time a full test of the Ikeda sum rule. These data also show that the best available shell-model calculations overestimate this strength by a factor of 2. This result is significant in models of supernovae since electron capture in (fp)-shell nuclei, which is proportional to S+, depletes the relativistic electron gas in precollapse stars.

Original languageEnglish
Pages (from-to)439-442
Number of pages4
JournalPhysical Review Letters
Issue number4
StatePublished - 1987


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