Decoupling of valence neutrons from the core in 17B

Zs Dombrádi, Z. Elekes, R. Kanungo, H. Baba, Zs Fülöp, J. Gibelin, Á Horváth, E. Ideguchi, Y. Ichikawa, N. Iwasa, H. Iwasaki, S. Kanno, S. Kawai, Y. Kondo, T. Motobayashi, M. Notani, T. Ohnishi, A. Ozawa, H. Sakurai, S. ShimouraE. Takeshita, S. Takeuchi, I. Tanihata, Y. Togano, C. Wu, Y. Yamaguchi, Y. Yanagisawa, A. Yoshida, K. Yoshida

研究成果: Contribution to journalArticle査読

18 被引用数 (Scopus)

抄録

Proton inelastic scattering study of 17B nucleus has been performed at 43.8 A MeV average energy in inverse kinematics using a liquid hydrogen target. In the Doppler corrected γ ray spectrum, a single peak with an energy of 1089(15) keV appeared corresponding to the first excited state of 17B. Based on the reaction cross section, β2pp′ deformation parameter of the transition is deduced by distorted wave analysis. Comparing it with the electric quadrupole moment of the nucleus, it is shown that the deformation of the neutron distribution is large (βn∼0.6), and the neutron effective charge is much smaller (en<0.12) than usual (∼0.5). The small effective charge is interpreted as a consequence of the decoupling of valence neutrons from the core.

本文言語英語
ページ(範囲)81-88
ページ数8
ジャーナルPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
621
1-2
DOI
出版ステータス出版済み - 8 11 2005
外部発表はい

All Science Journal Classification (ASJC) codes

  • 核物理学および高エネルギー物理学

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