Polarized, high-density, gaseous He3 targets

T. E. Chupp, M. E. Wagshul, K. P. Coulter, A. B. McDonald, W. Happer

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Abstract

The technique of spin exchange between laser optically pumped alkali-metal vapor and He3 can provide several atm cm-3 (Š1021 atoms in a volume of 6 cm3) of nearly 100% polarized He3. We have recently produced 40% polarization of 1020 atoms of He3 (3 atm in 1.3 cm3). It should therefore be possible to produce useful polarized He3 targets by this technique. The realization of a practical target is limited by the contribution to depolarization by ionization during bombardment. This has been studied with a 360-nA, 18-MeV ±-particle beam with encouraging results. A He3 target with 5090 % polarization and a thickness of 1020 atoms cm-2 is feasible. This paper presents the principles of the technique, the recent progress on spin exchange with optically pumped alkali-metal vapor, and studies of ionization-induced depolarization.

Original languageEnglish (US)
Pages (from-to)2244-2251
Number of pages8
JournalPhysical Review C
Volume36
Issue number6
DOIs
Publication statusPublished - Jan 1 1987
Externally publishedYes

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ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Chupp, T. E., Wagshul, M. E., Coulter, K. P., McDonald, A. B., & Happer, W. (1987). Polarized, high-density, gaseous He3 targets. Physical Review C, 36(6), 2244-2251. https://doi.org/10.1103/PhysRevC.36.2244