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Negative-hydrogen-ion production by backscattering from alkali-metal targets [electronic resource].

Published
Berkeley, Calif. : University of California, Berkeley, 1979.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
Pages: 12 : digital, PDF file
Additional Creators
University of California, Berkeley and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
Measurements have been made of the total backscattered D/sup -/ and H/sup -/ yields from Cs, Rb, K, Na and Li surfaces bombarded with D/sub 2//sup +/, D/sub 3//sup +/, H/sub 2//sup +/ and H/sub 3//sup +/ in the energy range 0.15 to 4 keV/nucleus. All measurements were made at a background pressure less than 10/sup -9/ Torr and the alkali-metal surfaces were evaporated onto a substrate in situ to minimize contamination of surfaces. For each target, the D/sup -/ and H/sup -/ yields exhibited maxima (as high as 8% per incident deuteron or proton for Cs); the maxima occurred at incident energies between 300 and 1000 eV/nucleus and always occurred at a lower incident energy for H than for D for a given target. Both the H/sup -/ and D/sup -/ yields decreased, at any measured energy, in going from Cs to Li in the order given above. Measurements of the H/sup -/ yield were also made for H/sub 3//sup +/ bombarding a W substrate, as a function of the work function of the target, as Li was deposited on the W. The work function of the target showed a minimum as the Li coverage was increased and the H/sup -/ yield showed a corresponding maximum which was almost two orders of magnitude higher than the H/sup -/ yield for a thick Li target.
Report Numbers
E 1.99:lbl-9992
E 1.99: conf-791057-2
conf-791057-2
lbl-9992
Subject(s)
Other Subject(s)
Note
Published through SciTech Connect.
11/01/1979.
"lbl-9992"
" conf-791057-2"
Workshop on hydrogen recycling, Livermore, CA, USA, 17 Oct 1979.
Schneider, P.J.; Stearns, J.W.; Pyle, R.V.; Graham, W.G.; Berkner, K.H.
Funding Information
W-7405-ENG-48
View MARC record | catkey: 13828851