論文

査読有り
2017年11月

Role of Multichance Fission in the Description of Fission-Fragment Mass Distributions at High Energies

PHYSICAL REVIEW LETTERS
  • K. Hirose
  • ,
  • K. Nishio
  • ,
  • S. Tanaka
  • ,
  • R. Leguillon
  • ,
  • H. Makii
  • ,
  • I. Nishinaka
  • ,
  • R. Orlandi
  • ,
  • K. Tsukada
  • ,
  • J. Smallcombe
  • ,
  • M. J. Vermeulen
  • ,
  • S. Chiba
  • ,
  • Y. Aritomo
  • ,
  • T. Ohtsuki
  • ,
  • K. Nakano
  • ,
  • S. Araki
  • ,
  • Y. Watanabe
  • ,
  • R. Tatsuzawa
  • ,
  • N. Takaki
  • ,
  • N. Tamura
  • ,
  • S. Goto
  • ,
  • I. Tsekhanovich
  • ,
  • A. N. Andreyev

119
22
開始ページ
222501
終了ページ
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1103/PhysRevLett.119.222501
出版者・発行元
AMER PHYSICAL SOC

Fission-fragment mass distributions were measured for U237-240, Np239-242, and Pu241-244 populated in the excitation-energy range from 10 to 60 MeV by multinucleon transfer channels in the reaction O-18 + U-238 at the Japan Atomic Energy Agency tandem facility. Among them, the data for U-240 and Np-240,Np- 241,Np- 242 were observed for the first time. It was found that the mass distributions for all the studied nuclides maintain a double-humped shape up to the highest measured energy in contrast to expectations of predominantly symmetric fission due to the washing out of nuclear shell effects. From a comparison with the dynamical calculation based on the fluctuation-dissipation model, this behavior of the mass distributions was unambiguously attributed to the effect of multichance fission.

Web of Science ® 被引用回数 : 26

リンク情報
DOI
https://doi.org/10.1103/PhysRevLett.119.222501
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000416243000001&DestApp=WOS_CPL

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