摘要
以15.0和21.7MeV/A的^(28)Si束轰击^(238)U靶,测量出裂变核在反应中得到的线动量转移(LMT)分布.从LMT分布上的不同区段,将非完全熔合裂变(ICF)与跟随裂变(SF)分开;并给出SF产额与总裂变产额的比值.从裂片在围绕反应平面上下的分布宽度,讨论了粒子发射使裂片反冲的效应.
According to the distribution of linear momentum transfer (lmt) obtained from the correlation measurement of fission partner, the events of Incomplete Fusion Fission (ICF) and Sequential Fission (SF) were distinguished. The fission angular distributions of both ICF and SF were obtained, respectively.With calculating the moment of inertia by Cassinian Ovaloid as the fission shape, the angular distributions were fitted by current procedure. The spins of fission nuclei corresponding to ICF and SF are extracted. The relation between spins and bombarding energy is discussed. Besides, the angular distribution in coincidence with complex particles is discussed.
出处
《高能物理与核物理》
CSCD
北大核心
1990年第10期912-918,共7页
High Energy Physics and Nuclear Physics
基金
国家自然科学基金
