Kurahashi Mitsunori
National Institute for Materials Science, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan.
Rev Sci Instrum. 2021 Jan 1;92(1):013201. doi: 10.1063/5.0031903.
In the past, the Stern-Gerlach experiment has been used as a standard method for analyzing the population of magnetic substates contained in spin-polarized and/or state-selected atomic/molecular beams. However, this experiment is quite demanding due to its low signal intensity and difficulty in beam alignment. The present study shows that the use of a hexapole magnet and a spin flipper, together with the time-of-flight analysis, allows us to conduct an almost equivalent analysis while greatly improving the signal intensity. Applications to the analysis of spin-polarized triplet excited helium and state-selected O( Σ ) beams are presented.
过去，斯特恩-盖拉赫实验一直被用作分析自旋极化和/或态选择的原子/分子束中磁亚态分布的标准方法。然而，由于其信号强度低且束流对准困难，该实验要求颇高。本研究表明，使用六极磁铁和自旋翻转器，结合飞行时间分析，能让我们在大幅提高信号强度的同时进行几乎等效的分析。文中还介绍了其在自旋极化三重态激发氦和态选择O( Σ )束流分析中的应用。
