Dilute cluster structure in 11B

✍ Scribed by T. Kawabata; H. Akimune; H. Fujita; Y. Fujita; M. Fujiwara; K. Hara; K. Hatanaka; M. Itoh; Y. Kanada-En'yo; S. Kishi; K. Nakanishi; H. Sakaguchi; Y. Shimbara; A. Tamii; S. Terashima; M. Uchida; T. Wakasa; Y. Yasuda; H.P. Yoshida; M. Yosoi

• Publisher: Elsevier Science
• Year: 2007
• Tongue: English
• Weight: 165 KB
• Volume: 788
• Category: Article
• ISSN: 0375-9474
• DOI: 10.1016/j.nuclphysa.2007.01.016

✦ Synopsis

The cluster structures of the excited states in 11 B are studied by analyzing the isoscalar monopole and quadrupole strengths in the 11 B(d,d ) reaction at E d = 200 MeV. The excitation strengths are compared with the predictions by the shell-model and antisymmetrized molecular-dynamics (AMD) calculations. It is found that the large monopole strength for the 3/2 - 3 state at E x = 8.56 MeV is well described by the AMD calculation and is an evidence for a developed 2α + t cluster structure.