Multiply stripped ion generation in the metal vapor vacuum arc

Technical Report · Tue Sep 01 04:00:00 EDT 1987

DOI:https://doi.org/10.2172/5228893· OSTI ID:5228893

Brown, I G; Feinberg, B; Galvin, J E

We consider the charge state distribution of ions produced in the metal vapor vacuum arc plasma discharge. A new kind of high current metal ion source in which the ion beam is extracted from a metal vapor vacuum arc plasma has been used to obtain the spectra of multiply charged ions produced within the cathode spots. The cathode materials used and the species reportetd on here are: C, Mg, Al, Si, Ti, Cr, Fe, Co, Ni, Cu, Zn, Zr, Nb, Mo, Rh, Pd, Ag, In, Sn, Gd, Ho, Ta, W, Pt, Au, Pb, Th, and U; the arc current was 200 A for all measurements. Charge state spectra were measured using a time-of-flight method. The arc voltage was also measured. In this paper we report on the measured charge state distributions and arc voltages and compare the distributions with the predictions of a theory in which ionization occurs in the cathode spots via stepwise ionization by electron impact. 64 refs., 10 figs., 3 tabs.

• Research Organization: Lawrence Berkeley Lab., CA (USA)
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 5228893
• Report Number(s): LBL-21999-Rev.; ON: DE88008418
• Country of Publication: United States
• Language: English

Related Subjects

640302* -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
CARBIDES
CARBON COMPOUNDS
CHALCOGENIDES
CHARGE STATE
CHARGED PARTICLES
DISTRIBUTION
ELECTRODES
ION SOURCES
IONIZATION
IONS
LEAD COMPOUNDS
LEAD SULFIDES
SULFIDES
SULFUR COMPOUNDS
TIME-OF-FLIGHT METHOD
TITANIUM CARBIDES
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS