Polarized ions from a storage cell

A test of a storage cell in the ionizer of the atomic beam-type polarized ion source is described. The cylindrical aluminum storage cell with uncoated walls and with internal diameter 1.5 cm had been placed in the charge-exchange region of the plasma ionizer. A pulsed polarized hydrogen atomic beam was injected into the storage cell from one side, and deuterium plasma was injected from the other side through an orifice with a diameter of 3 mm. The tests were made with a pulsed deutron ion beam of 5 mA. Results of intensity and polarization measurements for the polarized proton beam extracted are presented. The intensity gain obtained with the storage cell in comparison with operation without the storage cell was measured to be 9.0. The polarization of the proton beam from the storage cell reaches 0.94±0.03. Possible schemes for production of polarized negative hydrogen ions and polarized 3He++ ions with a storage cell are discussed