Microscopic structure of the Gamow-Teller resonance in [Formula presented]

K. Hara, Tatuya Adachi, H. Akimune, I. Daito, H. Fujimura, Y. Fujita, M. Fujiwara, K. Fushimi, K. Y. Hara, M. N. Harakeh, K. Ichihara, T. Ishikawa, J. Jänecke, J. Kamiya, T. Kawabata, K. Kawase, K. Nakanishi, Yasuhiro Sakemi, Y. Shimbara, Y. ShimizuM. Uchida, H. P. Yoshida, M. Yosoi, R. G.T. Zegers

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

The Gamow-Teller (GT) states in [Formula presented] have been studied via the [Formula presented] and [Formula presented] coincidence experiments. The GT states in [Formula presented] at [Formula Presented], where both [Formula Presented] and [Formula Presented] states exist, are excited strongly in the [Formula presented] reaction at [Formula presented] and [Formula Presented]. Proton emissions from the GT states in [Formula presented] to the hole states in [Formula presented] have been observed with solid-state detectors in coincidence with high energy tritons measured with a magnetic spectrometer. For the first time, the [Formula Presented]-ray emissions from the excited states in [Formula presented] and in [Formula presented], following the [Formula presented] reaction at intermediate energies, have also been observed in coincidence with tritons. Strengths of proton decay into several neutron-hole states in [Formula presented] and [Formula Presented]-decay strengths are used to discuss the wave functions of the GT states in [Formula presented]. The [Formula Presented] and [Formula Presented] GT states do only weakly decay into a [Formula Presented] neutron-hole state at [Formula Presented] in [Formula presented], which is strongly excited via the [Formula presented] reaction. The wave functions of the [Formula Presented] and [Formula Presented] GT states with the [Formula Presented] neutron-hole configuration are inferred to be strongly coupled to [Formula Presented] configurations, making fragmented GT strengths in [Formula presented].

Original languageEnglish
JournalPhysical Review C - Nuclear Physics
Volume68
Issue number6
DOIs
Publication statusPublished - 2003 Jan 1
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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