Spectroscopic investigation of H/sup -/ and D/sup -/ ion source plasmas

Conference · Thu Jul 30 00:00:00 EDT 1987 · AIP Conf. Proc.; (United States)

OSTI ID:6237760

Smith, Jr, H V; Allison, P; Keller, R

Several H I (Balmer), Cs I, Cs II, and Mo I lines emitted by the small-angle source and 4X source plasmas are studied. After correcting for Stark broadening, the H..cap alpha.. line width gives the H-atom temeprature kT/sub H/O. After correcting for Doppler broadening, the H/sub ..beta../ and H/sub delta/ line widths give the electron density n/sub e/. For pulsed operation of both sources, kT/sub H/o is 1.5 to 2 eV and n/sub e/ is 1 to 2 x 10/sup 14//cm/sup 3/,with kT/sub H/o and n/sub e/ scaling approximately with the square root of the discharge current. For the 4X source operated on D/sub 2/, kT/sub D/o and n/sub e/ are near the values of kT/sub H/o and n/sub e/ obtained for H/sub 2/ operation. Assuming that the H/sup -//D/sup -/ ion temperature equals the H/D-atom temperature, we deduce a lower limit to the H/sup -//D/sup -/ beam emittance.

• Research Organization: AT-2, MS H818, Los Alamos National Laboratory, Los Alamos, NM 87545
• OSTI ID: 6237760
• Report Number(s): CONF-8610115-
• Journal Information: AIP Conf. Proc.; (United States), Vol. 158:1; Conference: 4. international symposium on the production and neutralization of negative ions and beams, Upton, NY, USA, 27 Oct 1986
• Country of Publication: United States
• Language: English

Related Subjects

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ELECTRON DENSITY
HYDROGEN IONS 1 MINUS
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CHARGED PARTICLES
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LINE BROADENING
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