【摘要】 用正则变换、复平面展开、泰勒展开3种不同的方法对磁场矢函的表达式进行推导,得出3种磁场矢函表达式。对3种磁场矢函表达式进行了比较分析。在一定的条件下,3种表达式可以写成统一的表达式。在实际的研究中,可根据具体情况选择适当的表达式。更多还原

【Abstract】 Vector potential and expanded forms of magnetic field play a very importantrole in accelerator physics investigation. Begin with the different expended forms of vec-tor potential, the Laplace equation of vector potential is solved and three general expres-sions used in accelerator physics are obtained. In addition, the difference of these ex-pressions and the influence caused by the difference are presented. As a conclusion, theapplications of these expressions are also given.更多还原