Performance of Frozen-Spin Polarized HD Targets for Nucleon Spin Experiments (original) (raw)

2007

Abstract

Frozen-spin HD targets have been used to measure beam-target double-polarization observables in pion photo-production at the LEGS (Laser Electron Gamma Source) facility. The HD targets are pure; the only unpolarizable nucleons associated with the target cell are sampled in empty-cell measurements and subtracted in the conventional way, resulting in exceptionally clean spectra. HD gas is isotopically purified by distillation and

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