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利用离线γ能谱法，测定了１８．８－４６．２ＭｅＶ／ｕ的￣（１２）Ｃ离子与￣（９３）Ｎｂ相互作用中４３个靶余核的激发函数。这些激发函数随着入射能的变化大体上分为二类，定性显示了熔合－碎裂模型对于热核的类蒸发，类裂变和多破碎三种衰变模式的竞争演化预言的变化趋势。还发现了￣（９２）Ｎｂ￣ｍ的生成截面几乎恒定于５．０×１０￣（３０）ｍ￣２的反常现象。
Excitation functions of 43 target nuclei in the interaction of ~ (12) C ions with ~ (93) Nb at 18.8-46.2 MeV / u were measured by off-line gamma spectroscopy. These excitation functions are generally classified into two categories with the variation of incident energy. The qualitative and quantitative analysis shows that the fusion-fragmentation model has a tendency to predict the competitive evolution of three kinds of decay modes, such as quasi-evaporites, fission-fission and multiple crushing. Also found that the formation of ~ (92) Nb ~ m cross-section almost constant at 5.0 × 10 ~ (30) m ~ 2 of the anomaly.