【摘要】 讨论了纯虚阶Ｂｅｓｓｅｌ函数和虚阶修正Ｂｅｓｓｅｌ函数的定义式，及它们的相关性质．并给出在轫致辐射中的应用实例更多还原

【Abstract】 The definitions and their properties of imaginary Bessel fuctions and modified imaginary Bessel functions are discussed,and an example of their application is presented. \ \更多还原