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核核碰撞中不稳定轻核的方位角各向异性发射

AZIMUTHALLY ANISOTROPIC EMISSION OF UNSTABLE LIGHT NUCLEI IN NUCLEUS NUCLEUS COLLISIONS
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摘要 利用符合的粒子粒子关联测量,研究了25MeV/u40Ar+197Au反应中不稳定轻核的在平面发射和出平面发射.对于中速的不稳定轻核,观测到在平面发射几率增大,这表明该反应系统中存在旋转效应.该现象随碰撞参数增大更为强烈。 The in plane and out of plane emission of unstable light nuclei was measured in the reaction of 40 Ar+ 197 Au at energy 25MeV/u by means of extensive particle particle correlation. An in plane enhancement is observed for mid rapidity unstable light nuclei, indicating a rotational effect exists in this reaction system. This in plane enhanced emission becomes stronger with increasing of impact parameter, but becomes a little weaker with increasing of energy of the excited state.
出处 《物理学报》 SCIE EI CAS CSCD 北大核心 1996年第9期1438-1443,共6页 Acta Physica Sinica
基金 国家自然科学基金和中国科学院基金
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