| 载流有限长密绕螺线管的磁场分布 |
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| 引用本文： | 丁健.载流有限长密绕螺线管的磁场分布[J].大学物理,2009,28(8). |
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| 作者姓名： | 丁健 |
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| 作者单位： | 长安大学,理学院,物理系,陕西,西安,710064 |
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| 摘 要： | 对于通以恒定电流的有限长螺线管,首先用柱函数展开法推导出矢势的表达式,再利用磁感应强度与矢势的关系式,得出积分形式的磁场表达式.然后用直接积分的方法计算出磁场分布的级数表达式.最后讨论了某些特殊位置处的磁场.
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| 关 键 词： | 螺线管 恒定电流 磁场 磁感应强度 级数表达式 |
The magnetic field distribution of a current-carrying tightly wound solenoid with finite length |
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| DING Jian.The magnetic field distribution of a current-carrying tightly wound solenoid with finite length[J].College Physics,2009,28(8). |
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| Authors: | DING Jian |
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| Institution: | Department of Physics;College of Science;Chang'an University;Xi'an;Shaanxi 710064;China |
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| Abstract: | For a steady current-carrying tightly wound solenoid with finite length,first,the expression of vector potential is derived by using the method of cylindrical function expansion and the expressions of magnetic field in the integral form are obtained by employing the relation between vector potential and magnetic induction.Next,the analytic expressions in the series form of magnetic field distribution are calculated by using the integration method directly.Finally,the magnetic field on some special positions... |
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| Keywords: | solenoid steady current magnetic field magnetic induction series expression |
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