Preparation of individual magnetic sub-levels of ${}^4$He($2^3$S${}_1$) in a supersonic beam using laser optical pumping and magnetic hexapole focusing

Tobias Sixt, Jiwen Guan, Alexandra Tsoukala +4

We compare two different experimental techniques for the magnetic-sub-level preparation of metastable ${}^4$He in the $2^3$S${}_1$ level in a supersonic beam, namely magnetic hexapole…