Microscopic structure of the Gamow-Teller resonance in 208Bi

H. Akimune, I. Daito, Y. Fujita, M. Fujiwara, M. B. Greenfield, M. N. Harakeh, T. Inomata, J. Jänecke, K. Katori, S. Nakayama, H. Sakai, Y. Sakemi, M. Tanaka, M. Yosoi

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9 Citations (Scopus)


The 208Pb(3He,t)208Bi reaction has been studied with the RCNP ring cyclotron at E(3He) = 450 MeV using the magnetic spectrometer Grand Raiden at θ = 0°. The Gamow-Teller resonance is strongly excited at this bombarding energy. Its microscopic structure has been investigated by measuring the direct proton decay to the neutron-hole states in 207Pb. The branching ratio for proton emission of a few % is much smaller than that for the decay of the isobaric analog state. The total width of the Gamow-Teller resonance as well as its total and partial escape widths have been determined. Several recent theoretical estimates for the escape width differ from the measured values by factors of ~ 2.5.

Original languageEnglish
Pages (from-to)255-265
Number of pages11
JournalNuclear Physics, Section A
Issue number1-2
Publication statusPublished - 1994 Mar 7
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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