Vacuum arc ion charge-state distributions

Author

Brown, Ian G. ; Godechot, Xavier

Author_Institution

Lawrence Berkeley Lab., California Univ., Berkeley, CA, USA

Volume

19

Issue

5

fYear

1991

fDate

10/1/1991 12:00:00 AM

Firstpage

713

Lastpage

717

Abstract

Vacuum arc ion charge-state spectra have been measured 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. Data were obtained 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 ms: arc current was 100 A throughout. The measured distributions are cataloged and compared with earlier results. Some observations about the performance of the various elements as suitable vacuum arc cathode materials are also presented

Keywords

arcs (electric); particle beam diagnostics; 0.25 ms; 100 A; Ag; Al; Au; Ba; Bi; C; Ca; Cd; Ce; Co; Cr; Cu; Dy; Er; Fe; Gd; Ge; Hf; Ho; In; Ir; La; Li; Mg; Mn; Mo; Nb; Nd; Ni; Pb; Pd; Pr; Pt; Sc; Si; Sm; Sn; Sr; Ta; Th; Ti; U; V; W; Y; Yb; Zn; Zr; arc current; charge-state distributions; energetic ion beam; ion charge-state spectra; metal vapor vacuum arc ion source; metallic cathode materials; pulse length; pulsed mode; time-of-flight diagnostic; vacuum arc; Cathodes; Chromium; Current measurement; Elementary particle vacuum; Energy measurement; Inorganic materials; Ion beams; Ion sources; Monitoring; Vacuum arcs;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/27.108403

Filename

108403