Elsevier

Nuclear Physics A

Volume 466, Issue 1, 27 April 1987, Pages 139-156
Nuclear Physics A

On the projectile fragmentation in heavy-ion reactions at intermediate energies

https://doi.org/10.1016/0375-9474(87)90350-2Get rights and content

Abstract

The two-body fragmentation of the projectile in the target field is described within a three-body dynamic model. Four types of reaction emerge: fusion at low energies and low impact parameters b, elastic and inelastic reactions at high b and two types of fragmentation in peripheral collisions. For high b the two projectile parts are emitted while for low b one fragment fuses with the target and only the other one can be detected. In the first case the part which has grazed the target has been strongly slackened and has a velocity of 0.7 V beam for small emission angles to 0.5 V beam for large angles. It might be a contribution to the relaxed fragment events detected at intermediate angles. In agreement with experimental data, the b2 window for this kind of fragmentation is very narrow for heavy quasi-projectiles and widens with decreasing masses. This model allows to reproduce semi-quantitatively the mass distribution of the quasi-projectiles, the position of the maximum in the one- and two-peak energy spectra and the relative importance of the two types of fragmentation.

References (26)

  • W.D. Myers

    Nucl. Phys.

    (1978)
  • C. Grégoire et al.

    preprint GANIL P86-05

    Nucl. Phys.

    (1987)
  • C. Grégoire et al.

    Phys. Lett.

    (1983)
  • G.G. Ohlsen

    Nuclear Instr. Meth.

    (1965)
  • G. Royer et al.

    Nucl. Phys.

    (1985)
  • J.P. Bondorf et al.

    Phys. Reports

    (1974)
  • H. Ngô et al.

    Nucl. Phys.

    (1980)
  • C.H. Egelhaaf et al.

    Nucl. Phys.

    (1983)
  • M.J. Murphy et al.

    Phys. Lett.

    (1983)
  • D. Guinet et al.

    Phys. Lett.

    (1984)
  • F. Rami et al.

    Nucl. Phys.

    (1985)
  • M. Morjean et al.

    Nucl. Phys.

    (1985)
  • G. Bizard et al.

    Phys. Lett.

    (1986)
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