The (3He,tp) reaction: A means to study the microscopic structure of spin-isospin modes

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

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

The microscopic structure of both the Gamow-Teller resonance (GTR) at Eχ = 15.6 MeV and the spin-flip ΔL=1 resonances at higher excitation energies in 208Bi has been investigated by observing their direct proton decay to the 3p 1 2, 2f 5 2, 3p 3 2, 1i 3 2 and 2f 7 2 neutron-hole states in 207Pb, following their excitation via the 208Pb (3He,t) reaction at E(3He) = 450 MeV. Decay protons were measured at backward angles in coincidence with tritons detected at very forward angles including θ = 0°. The total widths of the resonances as well as total and partial proton escape widths were determined and compared to theoretical estimates for the GTR. Using the same experimental set-up and conditions proton decay of the spin-flip ΔL=1 resonances in 12C was also measured.

Original languageEnglish
Pages (from-to)57-66
Number of pages10
JournalNuclear Physics, Section A
Volume577
Issue number1-2
DOIs
Publication statusPublished - 1994 Sep 19

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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