Design of a Tensor Polarized Deuterium Target Polarized by Spin-Exchange with Optically Pumped NA

摘要

A proposed design for a tensor polarized deuterium target (approx. 10 exp 15 atoms/cm exp 2 ) for nuclear physics studies in an electron storage ring accelerator is presented. The deuterium atoms undergo electron spin exchange with a highly polarized sodium vapor; this polarization is transferred to the deuterium nuclei via the hyperfine interaction. The deuterium nuclei obtain their tensor polarization through repeated electron spin exchange/hyperfine interactions. The sodium vapor polarization is maintained by standard optical pumping techniques. Model calculations are presented in detail leading to a discussion of the expected performance and the technical obstacles to be surmounted in the development of such a target. 15 references, 10 figures. (ERA citation 09:050459)