High-resolution imaging of vacuum arc cathode spots

被引：21

作者：

Anders, A

Anders, S

Juttner, B

Luck, H

机构：

[1] MAX PLANCK INST PLASMA PHYS,BEREICH BERLIN,D-10117 BERLIN,GERMANY

[2] UNIV HANNOVER,INST PLASMAPHYS,W-3000 HANNOVER,GERMANY

来源：

IEEE TRANSACTIONS ON PLASMA SCIENCE | 1996年 / 24卷 / 01期

关键词：

Manuscript received July 18; 1995; revised October 19; 1995. This work was supported by the Deutsche Forschungsgemeinschaft and by the U.S. Department of Energy; Division of Advanced Energy Projects; under Contract DE-AC03-76SF00098. A. Anders and S. Anders are with the Lawrence Berkeley National Laboratory; University of California; Berkeley; CA 94720 USA. B. Juttner is with the Max-Planck-Institut fur Plasmaphysik; Bereich Berlin; 10117; Berlin; Germany. H. Luck was with the Institut fur Plasmaphysik; Universitat Hannover. He is now with the Max-Planck-Institut fur Quantenoptik; AuBenstelle Hannover; 30167; Hannover; Germany. Publisher Item Identifier S 0093-3813(96)02208-4;

D O I：

10.1109/27.491695

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

Imaging differential laser absorption spectroscopy was used to map the electron density distribution of vacuum are cathode spots, The temporal resolution was determined by the sequence of laser pulses (pulses of 0.4-ns duration, with 3-ns separation), The spatial resolution was limited by diffraction (better than 5 mu m). Fragments of cathode spots have been detected, and the following garameters could be derived: current density on the order of 10(12) A/m(2), plasma density greater than 3-6 x 10(26) m(-3), fragment size 5-10 mu m and smaller, current per fragment 20-40 A (for copper electrodes and are current 50-150 A), and the lifetime of dense plasma on the order of a few nanoseconds.

引用

页码：69 / 70

页数：2

共 4 条

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ANDERS, A ;

ANDERS, S .

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[2] PULSED DYE-LASER DIAGNOSTICS OF VACUUM-ARC CATHODE SPOTS [J].

ANDERS, A ;

ANDERS, S ;

JUTTNER, B ;

BOTTICHER, W ;

LUCK, H ;

SCHRODER, G .

IEEE TRANSACTIONS ON PLASMA SCIENCE, 1992, 20 (04) :466-472

[3]

[Anonymous], 1986, OPTICS

[4]

Boxman R.L., 1995, Vacuum Arc Science and Technology

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