Compact inline optical electron polarimeter.
Compact inline optical electron polarimeter.
复制标题
紧凑型在线光学电子旋光仪。
DOI：
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发表时间：
2013
影响因子：
1.6
通讯作者：
T. J. Gay
中科院分区：
文献类型：
--
作者：
M. Pirbhai;D. Ryan;G. Richards;T. J. Gay
本文描述了一种小型的氦靶光学电子偏振计。它提供了~20 Hz/nA的最大荧光检测效率，比早期设计高出一个数量级。使用氩靶，该器件预期具有270 Hz/nA的偏振品质因数。通过依靠磁场来引导纵向自旋极化电子束，本仪器采用更少的电极。它还使用市售的集成光子计数模块。这些特点使其占据更小的体积，使其更容易操作。
A compact optical electron polarimeter using a helium target is described. It offers a maximum fluorescence detection efficiency of ~20 Hz/nA, which is an order of magnitude higher than that of earlier designs. With an argon target, this device is expected to have a polarimetric figure-of-merit of 270 Hz/nA. By relying on a magnetic field to guide a longitudinally spin-polarized electron beam, the present instrument employs fewer electrodes. It also uses a commercially available integrated photon counting module. These features allow it to occupy a smaller volume and make it easier to operate.