Spectroscopic investigation of H/sup -/ and D/sup -/ ion source plasmas
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/sub ..cap alpha../ line width gives the H-atom temperature 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:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 6835200
- Report Number(s):
- LA-UR-86-3863; CONF-8610115-18; ON: DE87005130
- Resource Relation:
- Conference: 4. international symposium on the production and neutralization of negative ions and beams, Upton, NY, USA, 27 Oct 1986; Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
Similar Records
A contribution to spectroscopic diagnostics and cathode sheath modeling of micro-hollow gas discharge in argon
Spectroscopic studies of a laser-produced carbon plasma in the near and extreme ultraviolet