A Demonstration of the Magnetic Mirror Effect
A Demonstration of the Magnetic Mirror Effect
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DOI：
10.1119/1.1941840
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发表时间：
1962-12
影响因子：
0.9
通讯作者：
R. J. Allen
中科院分区：
文献类型：
--
作者：
R. J. Allen
描述了带电粒子螺旋进入会聚磁场所表现出的磁镜像效应。该仪器使用了一个商业电子管充满了惰性气体，最初设计用于测量电子的特定电荷。一个普通的条形磁铁提供了必要的磁场结构。根据螺旋轨道的照片测量了粒子轨迹上各点的俯仰角。与这些点相对应的磁场强度是通过在条形磁铁末端附近进行的广泛磁场测量独立确定的。与理论比较了粒子轨迹上两个不同点的场强之比与这些点的螺距角的关系。
A description is given of the magnetic mirror effect exhibited by charged particles spiralling into a converging magnetic field. The apparatus makes use of a commercial electron tube filled with an inert gas, originally designed for measuring the specific charge of the electron. The necessary field configuration is provided by an ordinary bar magnet. Measurements of pitch angle at various points of the particle trajectories were made from photographs of the spiral orbits. The magnetic field strength corresponding to these points was determined independently from extensive field measurements carried out near the end of the bar magnet. The ratio of field strengths at two different points of the particle trajectory as a function of the spiral pitch angles at those points is compared with theory.