用北京Q3D磁谱仪及其重离子焦面探测器系统测量了两个体系的 14个弹性散射角分布 ,即16O + 94 Zr体系在 5 2 ,5 7,5 9,6 2 ,72 ,82和 92MeV 7个能量点及16O + 116Sn体系在 5 7,5 9,6 2 ,6 7,72 ,82和 92MeV 7个能量点的弹性散射角分布 .用耦合道理论的ECIS计算程序拟合数据 ,初步观察到了“阈反常”现象 The distribution of 14 elastic scattering angles of the two systems was measured by Beijing Q3D magnetic spectrometer and its heavy ion focal plane detector system, namely 16O + 94 Zr system at 5 2, 5 7, 5 9, 62, 72, 82 And elastic scattering angle distribution of seven energy points of 92MeV and 16O + 116Sn at seven energy points of 5 7, 5 9, 62, 6 7, 72, 82 and 92 MeV.The ECIS calculation data of the coupled channel theory , Initially observed the “threshold abnormal” phenomenon