Vacuum arc ion charge state distributions

Conference · Fri Jun 01 04:00:00 EDT 1990

OSTI ID:6726310

Brown, I G; Godechot, X

We have measured vacuum arc ion charge state spectra for a wide range of metallic cathode materials. The charge state distributions were measured using a time-of-flight diagnostic to monitor the energetic ion beam produced by a metal vapor vacuum arc ion source. We have obtained data for 48 metallic cathode elements: Li, C, Mg, Al, Si, Ca, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ge, Sr, Y, Zr, Nb, Mo, Pd, Ag, Cd, In, Sn, Ba, La, Ce, Pr, Nd, Sm, Gd, Dy, Ho, Er, Yb, Hf, Ta, W, Ir, Pt, Au, Pb, Bi, Th and U. The arc was operated in a pulsed mode with pulse length 0.25 msec; arc current was 100 A throughout. This array of elements extends and completes previous work by us. In this paper the measured distributions are cataloged and compared with our earlier results and with those of other workers. We also make some observations about the performance of the various elements as suitable vacuum arc cathode materials.

• Research Organization: Lawrence Berkeley Lab., CA (USA)
• Sponsoring Organization: DOD; DOE/ER
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 6726310
• Report Number(s): LBL-29244; CONF-9009192--11; ON: DE90015720; CNN: AR0116-89; N00014-88-F-0093
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
430301* -- Particle Accelerators-- Ion Sources
656003 -- Condensed Matter Physics-- Interactions between Beams & Condensed Matter-- (1987-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BEAMS
CHARGE DISTRIBUTION
CHARGE STATE
ELEMENTS
ION BEAMS
ION SOURCES
METALS
PERFORMANCE
TIME-OF-FLIGHT METHOD