CO/sub 2/ laser sustained CW discharge atomic beam source

Conference · Wed Jan 01 00:00:00 EST 1986

OSTI ID:5524803

Cross, J B; Cremers, D A; Spangler, L H; Hoffbauer, M A; Archuleta, F A

A high pressure, supersonic, laser sustained plasma nozzle beam source has been developed for the production of intense (>10/sup 19/ particles s/sup 1/-sr/sup -1/) beams of atomic and/or radical species having kinetic energies in the range of 1 to 10 eV. A high plasma temperature (10 to 30,000 K) is produced in the throat of a hydrodynamic expansion nozzle by sustaining a cw optical discharge in a gas using a high power cw CO/sub 2/ laser. Gas mixtures are expanded through the nozzle/discharge region creating energetic atoms and molecules. An oxygen atom beam has been produced with a kinetic energy of 2 to 3 eV and an intensity of approx. 10/sup 18/ O-atoms s/sup -1/sr/sup -1/. O-atom collisions (1 eV) from an uncharacterized nickel surface shows strong specular scattering with approximately 50% energy loss to the surface. Argon beams having kinetic energies between 5 to 10 eV with intensities of >10/sup 19/ atoms s/sup -1/sr/sup -1/ have also been produced. 13 refs., 8 figs.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 5524803
• Report Number(s): LA-UR-86-1943; CONF-860636-3; ON: DE86012383
• Resource Relation: Conference: 15. international symposium on rarefied gas dynamics, Grado, Italy, 16 Jun 1986; Other Information: Portions of this document are illegible in microfiche products
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ARGON
ATOMIC BEAMS
PRODUCTION
NICKEL
ATOM COLLISIONS
OXYGEN
COLLISIONS
CARBON DIOXIDE LASERS
EV RANGE 01-10
NOZZLES
BEAMS
ELEMENTS
ENERGY RANGE
EV RANGE
FLUIDS
GAS LASERS
GASES
LASERS
METALS
NONMETALS
RARE GASES
TRANSITION ELEMENTS
640301* - Atomic
Molecular & Chemical Physics- Beams & their Reactions