Experimental investigations of electron capture from atomic hydrogen and deuterium by alpha particles [electronic resource].
- Published:
- Washington, D.C : United States. Dept. of Energy. Office of Energy Research, 1990.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy. - Physical Description:
- Pages: (19 pages) : digital, PDF file
- Additional Creators:
- United States. Department of Energy. Office of Energy Research
United States. Department of Energy. Office of Scientific and Technical Information - Access Online:
- www.osti.gov
- Summary:
- We have undertaken a program at the University of Missouri-Rolla to experimentally determine cross sections for ion-atom collisions of interest in fusion reactor development. During the last grant period, we have made measurements of total and singly-differential cross sections for the alpha double-capture reaction. He{sup ++} + He(ls²) → He(Σn,ℓ) + He{sup ++}. Collisions of this type have been discussed as a basis for diagnostics in which alphas are neutralized in a single collisions either by a HeI beam or by the ablative cloud from mechanically introduced impurity pellets. We are now finishing measurements of cross sections for the alpha single capture reaction He{sup ++} + He(1s²) → He⁺(n) + He⁺(1s), and propose to study He{sup ++} + H(1s) → He⁺(n) + H⁺ during next year. Accurate knowledge of these cross sections is fundamental for modeling of neutral-hydrogen beam penetration in fusion plasmas as well as for spectroscopic diagnostics of alpha densities and velocity distributions, especially for the case of capture into the n = 4 state of the projectile He⁺. Our measurements are made using a unique collision spectrometer discussed in this paper.
- Subject(s):
- Note:
- Published through SciTech Connect.
01/01/1990.
"doe/er/53188-7"
"DE91000594"
Missouri Univ., Rolla, MO (USA) - Funding Information:
- FG02-84ER53188
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