Polarized 3He Ion Source Based on the 23S1 Metastable State
- 1 August 1983
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Nuclear Science
- Vol. 30 (4) , 2731-2733
- https://doi.org/10.1109/tns.1983.4332938
Abstract
This 3He polarized ion source is based on the 23S1 metastable atomic state. We produce an intense metastable beam, 6 × l015p.sec-1.sr-1, of energies between 0.07 and 0.1 eV, using a cold cathode discharge. The separation and focussing of Zeeman components (F=1/2 mF=1/2) and (F=3/2 mF=3/2) is effected with a sextupole of varliable gap. An adiabatic RF transition enhances the nuclear polarization (theoretical) to 100%. Most design parameters of the source are now frozen for operation inside the H.V. terminal of a CN van de Graaff, but the source is of universal use in (+) ion accelerators.Keywords
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