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Nuclear collective flow and charged-pion emission in Ne-nucleus collisions at E/A = 800 MeV
J Gosset1, O Valette, J P Alard
1Département de Physique Nucléaire, Centre d'Etudes Nucléaires de Saclay, Gif-sur-Yvette, France.
Abstract:
Triple-differential cross sections of charged pions were measured for collisions of Ne projectiles at E/A = 800 MeV with NaF, Nb, and Pb targets. The reaction plane was estimated event by event from the light-baryon momentum distribution. For heavy targets, preferential emission of charged pions away from the interaction zone towards the projectile side was observed in the transverse direction. Such a preferential emission, which is not predicted by cascade calculations, may be attributed to a stronger pion absorption by the heavier spectator remnant.
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