Electrostatic cage “Stark barrel” for rapidly switching a uniform electric field through arbitrary angles
Electrostatic cage “Stark barrel” for rapidly switching a uniform electric field through arbitrary angles
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静电笼“斯塔克桶”，可通过任意角度快速切换均匀电场
DOI：
10.1063/1.1149268
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发表时间：
1998
影响因子：
1.6
通讯作者：
K. MacAdam
中科院分区：
文献类型：
--
作者：
J. Horn;D. Homan;C. Hwang;W. L. Fuqua;K. MacAdam
描述了一种圆柱形电极排列，以及控制电子器件，在真空中提供超过cm3体积的均匀电场，其角度和大小可以在μs时间尺度上切换。实现了全360°的场旋转，并且该设备允许从四面八方进入粒子或光束。给出了一般场的数值描述和解析描述。扩展到全三维场控制和其他变化的描述。该装置最初是为keV能量离子和激光激发的里德伯原子在场定向斯塔克态或相干椭圆态下的交叉束碰撞实验而设计的，可能在原子捕获和冷碰撞或材料和表面科学中更普遍地有用。
A cylindrical arrangement of electrodes, together with control electronics, is described that provides uniform electric fields over cm3 volumes in a vacuum, whose angle and magnitude can be switched on a μs time scale. Full 360° field rotation is achieved, and the device allows access for particle or light beams from all sides. Both numerical and analytic descriptions of the general fields are given. Extension to full three-dimensional field control and other variations are described. The device, which was originally designed for crossed-beam collision experiments with keV energy ions and laser-excited Rydberg atoms in field-directed Stark states or coherent-elliptic states, may be more generally useful in atom trapping and cold collisions or in materials and surface science.