Momentum dependence of spin polarization for beta emitting nuclei produced through charge exchange reaction at intermediate energy

S. Momota, M. Mihara, D. Nishimura, M. Fukuda, Y. Kamisho, M. Wakabayashi, K. Matsuta, S. Suzuki, M. Nagashima, Shengyun Zhu, Daqing Yuan, Yongnan Zheng, Zuo Yi, Ping Fan, T. Izumikawa, A. Kitagawa, S. Sato, M. Kanazawa, M. Torikoshi, T. MinamisonoY. Nakamura, K. Tashiro, A. Honma, N. Yoshida, H. Shirai, T. Ohtsubo, T. Nagatomo, H. Uenishi, K. Iwamoto, M. Yaguchi, T. Ogura, T. Ito, K. Yamamura, Y. Ichikawa, Y. Nojiri, J. R. Alonso, T. J.M. Symons

研究成果: Contribution to journalArticle査読

抄録

In order to investigate the polarization process in charge exchange reactions, we observed the momentum and angular distribution as well as the nuclear polarization of a proton-rich beta-emitting nucleus, 28P (Iπ = 3+, T1/2 = 270 msec), produced through the reaction 28Si+9Be at E = 100 MeV/u, by selecting the momentum and the ejection angle. An analysis by using double Gaussian functions resolved the observed momentum distribution into two reaction components, nucleon knockout and pick-up abrasion reactions, as suggested in a previous study. The behavior of the observed angular distribution and nuclear polarization implies the influence of those two components. The momentum dependence of the observed nuclear polarization of 28P could be consistently reproduced by a simple model, in which two reaction components are considered. The present study also shows that the charge exchange reaction at intermediate energy is a useful method to produce polarized beta-emitting nuclei, especially for proton-rich nuclei.

本文言語英語
ページ(範囲)53-58
ページ数6
ジャーナルHyperfine Interactions
220
1-3
DOI
出版ステータス出版済み - 5 2013
外部発表はい

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Nuclear and High Energy Physics
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry

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