論文

査読有り
2007年6月

Impact-parameter-dependent multifragmentation of C-60 in charge-changing collisions with 2-MeV C+ ions

PHYSICAL REVIEW A
  • T. Mizuno
  • ,
  • D. Okamoto
  • ,
  • T. Majima
  • ,
  • Y. Nakai
  • ,
  • H. Tsuchida
  • ,
  • A. Itoh

75
6
開始ページ
063203(1)
終了ページ
063203(5)
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1103/PhysRevA.75.063203
出版者・発行元
AMERICAN PHYSICAL SOC

Multifragmentation of C-60 was investigated for 2 MeV C+ projectile ions by means of a time-of-flight triple coincidence technique. Fragment ions and secondary electrons were measured simultaneously in coincident with charge-selected outgoing projectile particles scattered into forward angles smaller than 1.0 mrad. Fragment ion distributions were found to change remarkably with respect to the scattering angle theta. Relationships between theta and the impact parameter b measured from the center of C-60 were calculated classically. We found evidently that small-size fragment ions are produced only from cage-penetration collisions, while intact parent ions and their daughter ions are created in collisions nearby but outside a C-60. Furthermore, charge state distributions of prefragmented C-60(r+) ions and correlated fragment ion pairs were both found to be essentially independent of theta when plotted for individual C-m(+) ions of fixed size. These results indicate that the production of a size-fixed specific ion may be restricted to a certain impact parameter region in which equivalent electronic energies are deposited irrespectively of theta. This was confirmed also from our calculation of the energy deposition as a function of b carried out using the local density approximation.

リンク情報
DOI
https://doi.org/10.1103/PhysRevA.75.063203
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000247624300113&DestApp=WOS_CPL
ID情報
  • DOI : 10.1103/PhysRevA.75.063203
  • ISSN : 1050-2947
  • Web of Science ID : WOS:000247624300113

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