Multicoincidence study of fragmentation events at small angles from Ne20 induced reactions at 35 MeV/nucleon

R. Ost, A. Gamp, S. Kox, C. Perrin, N. Longequeue, and F. Merchez
Phys. Rev. C 32, 1927 – Published 1 December 1985
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Abstract

Targets of C12 and Al27 have been bombarded by 35 MeV/nucleon Ne20 ions. Inside a cone of ±10° around the beam axis, outgoing protons and α particles were detected by an arrangement of 18 scintillators in coincidence with particles of charge Z=5–11 emerging at 2°. At this energy the identified reaction mechanisms differ significantly from the ones observed in the 1015 MeV/nucleon region. Important energy transfer of around 50 MeV to the target-like residues is observed. For the coincident oxygen-α events, in addition to the well-known sequential decay mechanism of the projectile, about 40% of the events are attributed to another mechanism producing oxygen ions narrowly peaked near the beam velocity. Among the other reaction channels, cases are present which can be interpreted in terms of sequential decay alone, as well as others where admixtures of different processes play a role.

  • Received 15 July 1985

DOI:https://doi.org/10.1103/PhysRevC.32.1927

©1985 American Physical Society

Authors & Affiliations

R. Ost and A. Gamp

  • Hahn-Meitner-Institut für Kernforschung Berlin, D-1000 Berlin 39, West Germany

S. Kox, C. Perrin, N. Longequeue, and F. Merchez

  • Institut des Sciences Nucléaires, Grenoble, France

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Issue

Vol. 32, Iss. 6 — December 1985

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