The spontaneous emission spectrum of a novel wiggler with its magnetostatic-fiele indepen dent of the axial (z)coordinate is calculated by means of generalized Bessel functions,and the re sult is analysed.

• 利用广义Bessel函数计算出了ShlomoPinhas提出的磁场与纵向坐标无关的摆动器的自发辐射谱，并对结果进行了分析。