Search for 21B

A. Ozawa, Y. Yamaguchi, M. Chiba, R. Kanungo, K. Kimura, S. Momota, T. Suda, T. Suzuki, I. Tanihata, T. Zheng, S. Watanabe, T. Yamaguchi, and K. Yoshida
Phys. Rev. C 67, 014610 – Published 31 January 2003
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Abstract

An attempt was made to find the very neutron-rich isotope 21B among the fragmentation of a 94AMeV 40Ar beam. Evidence for the particle instability of 21B was obtained. As part of the search, the production cross sections of 13 light neutron-rich nuclei with Be and Ta targets are presented and compared to previous data. A large enhancement of the production cross sections for a Ta target is shown and a clear energy dependence of the production cross sections is shown for very neutron-rich nuclei.

  • Received 1 November 2002

DOI:https://doi.org/10.1103/PhysRevC.67.014610

©2003 American Physical Society

Authors & Affiliations

A. Ozawa1, Y. Yamaguchi1,2, M. Chiba1,3, R. Kanungo1, K. Kimura4, S. Momota5, T. Suda1, T. Suzuki2, I. Tanihata1, T. Zheng1,6,7, S. Watanabe2, T. Yamaguchi1,8, and K. Yoshida1

  • 1The Institute of Physical and Chemical Research (RIKEN), Hirosawa 2-1, Wako-shi, Saitama 351-0198, Japan
  • 2Department of Physics, Niigata University, Niigata-shi, Niigata 950-2181, Japan
  • 3Department of Physics, Tohoku University, Sendai-shi, Miyagi 980-8578, Japan
  • 4Nagasaki Institute of Applied Science, Nagasaki-shi, Nagasaki 851-0193, Japan
  • 5Kochi University of Technology, Tosayamada, Kochi 782-8502, Japan
  • 6Department of Physics, Tokyo University of Science, Noda-shi, Chiba 278-8510, Japan
  • 7Department of Technical Physics, Peking University, Beijing 100871, People’s Republic of China
  • 8Gesellschaft für Schwerionenforschung (GSI), Planckstrasse 1, D-64291 Darmstadt, Germany

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Issue

Vol. 67, Iss. 1 — January 2003

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