【摘要】 在6°─110°范围内测量了30MeV／u的40Ar轰击natAg靶产生的中等质量碎片（3≤Z≤16）能谱，利用运动源模型拟合能谱，并详细讨论了类弹、类靶和中速这三种源的特性及其随角度和中等质量碎片电荷的变化规律．从前角区中等质量碎片的符合测量中得到关联测得的两个中等质量碎片分别来自于两个发射源，即一个来自于类弹源，另一个来自于中速源的几率占绝大多数．更多还原

【Abstract】 The energy spectra of intermediate-mass fragments (IMF) (3≤Z≤16) have been measured from 6° to 110° for #oAr +natAg reachon at 30 MeV / u. The energy spectra were analyzed by the moving source model. The natUres of the projechle-like source, target-like source and mid-rapidity source as well as the evolution with angle and nuclear charge were discussed. Two intermediate mass fragments, measured by correlation method in forward angles, come from two sources. One comes from projectile-like source, and other one mainly comes from intermediate source respectively.更多还原