Abstract
Energy and angular correlations between α-particles and heavy ejectiles have been measured for 148 MeV 14N incident on 12C, 27Al and 58Ni targets. The coincidence cross sections for ejectiles with Z < 6 may be parametrised as a product of singles cross sections for the detection of α-particles and heavy ions. For 27Al and 58Ni targets, this indicates that the α-particles are emitted at an early stage of the reaction prior to the formation of the deep inelastic fragments. For the 12C target, however, kinematic effects are found to dominate the observed correlations. For Z ≧ 6 ejectiles the observed correlations appear consistent with the emission of α-particles from the recoiling nucleus produed in the reaction.
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