Elsevier

Nuclear Physics A

Volume 518, Issue 4, 26 November 1990, Pages 767-785
Nuclear Physics A

Evidence of a two-source emission for light charged particles in coincidence with pions produced in 16O + 27Al collisions at 94 MeV/nucleon

https://doi.org/10.1016/0375-9474(90)90190-WGet rights and content

Abstract

H and He ions have been detected in coincidence with charged pions in the reaction induced by 16O on 27Al target at 94 MeV/u incident energy. We analyse velocity spectra and cross sections of He ions emitted in the angular range 4°–150° in coincidence with charged pions detected at 90°. A two-source emission mechanism of the helium particles and a pion statistical production from an equilibrated participant zone is stressed. The absolute yields at different angles are compared with results of a theoretical model for medium energy heavy-ion reactions in the framework of a participant-spectator picture.

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    Permanant address: Institute of Modern Physics, Lanzhou, P.R. China.

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