Electron lifetime detector for liquid argon
Electron lifetime detector for liquid argon
复制标题
液氩电子寿命检测器
DOI：
10.1016/0168-9002(90)90176-7
复制
发表时间：
1990
影响因子：
1.4
通讯作者：
F. Ptohos
中科院分区：
文献类型：
--
作者：
G. Carugno;B. Dainese;F. Pietropaolo;F. Ptohos
A method has been developed for a fast and reproducible measurement of the electronegative contamination of liquid argon. The method is based on the transport of electrons extracted by a NdYag UV laser beam from a metallic photocathode. The transit time of the electrons from the emitting surface to a collecting plate depends on the applied electric field and ranges from a few tens of microseconds to milliseconds. The measurement of the purity is based on the ratio of collected to emitted charges. The operation can be performed in a few minutes and gives values of the electron lifetime with a typical error of a few percent. Filling and emptying the vessel can be done in less than an hour.
