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在４π立体角范围内收集反应产物，采用离束γ射线测量方法测量了６００ＭｅＶ４０Ａｒ＋１９７Ａｕ反应的给定质量数的碎片角分布．讨论了中能重离子反应碎片角分布特征和产生碎片的反应机制．
The reaction products were collected in the 4π solid angle range and the angular distribution of the fragment for a given mass of the 600MeV 40Ar + 197Au reaction was measured using a beam-free gamma-ray measurement. The angular distribution of heavy ion reaction fragments and the reaction mechanism of debris generation were discussed.