Spatial and temporal characteristics of the X-ray emitted by a 1-J 50-ns vacuum discharge

Author

Ikhlef, Abadelaziz ; Skowronek, Maurice

Author_Institution

Lab. des Plasmas Denses, Univ. Pierre et Marie Curie, Paris, France

Volume

21

Issue

6

fYear

1993

fDate

12/1/1993 12:00:00 AM

Firstpage

669

Lastpage

675

Abstract

The X-ray emission from a source based on a small vacuum discharge is studied. Two different X-ray pulses whose intensities vary with the anode-cathode distance are identified. Time integrated pinhole images show that the whole anode and the teflon insulator emit X-rays. Some of the X-ray emission is found to originate also in the vicinity of the tungsten anode. The temporal behavior of the X-ray varies with respect to the distance between the anode and the cathode. Three different cathode geometries are tested: hollow cathode, hollow conical cathode, and massive or needle cathode. The spatial distribution of the X-ray sources is obtained by means of a sensitive imaging device. Some X-ray spots that appear in the discharge gap near the anode tip are similar to hot spots found in more powerful discharges

Keywords

X-ray production; discharges (electric); 1 J; 50 ns; W; X-ray emission; X-ray emission intensity; X-ray pulses; X-ray source; X-ray spots; anode; anode tip; anode-cathode distance; cathode geometries; conical cathode; discharge gap; hollow cathode; massive cathode; needle cathode; spatial characteristics; spatial distribution; teflon insulator; temporal behavior; temporal characteristics; time-integrated pinhole images; vacuum discharge; Anodes; Cathodes; Fault location; Geometry; Insulation; Needles; Optical imaging; Testing; Tungsten; X-ray imaging;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/27.256786

Filename

256786