Elsevier

Nuclear Physics A

Volume 424, Issue 1, 30 July 1984, Pages 157-183
Nuclear Physics A

Mass drift in reactions between a heavy and a light nucleus

https://doi.org/10.1016/0375-9474(84)90133-7Get rights and content

Abstract

The dynamics of heavy-ion collisions is studied experimentally for metastable composite systems with interaction times between the collision time of quasi- and deep-inelastic processes and the capture time of fast-fission and compound-nucleus-fission reactions. Detailed angular, total kinetic energy and mass distributions are measured for reaction products with masses between the target and projectile masses including the symmetric masses. The mass drift is observed as a function of total kinetic energy and scattering angle.

References (19)

  • G. Rudolf et al.

    Nucl. Phys.

    (1979)
  • R. Bock et al.

    Nucl. Phys.

    (1982)
    H. Sann et al.

    Phys. Rev. Lett.

    (1981)
  • R. Kalpakchieva et al.

    Z. Phys.

    (1977)
  • J.V. Kratz et al.

    Phys. Rev. Lett.

    (1974)
  • D. Schüll et al.

    Phys. Lett.

    (1981)
  • R.J. Cusson et al.

    Nucl. Phys.

    (1982)
  • H. Stöcker, private...
  • L. Moretto

    Nucl. Phys.

    (1983)
  • J. Randrup et al.

    preprint LBL-17273

There are more references available in the full text version of this article.

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