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Proceedings Paper

Intense source of nanosecond duration 10-KeV to 250-KeV x rays
Author(s): Craig Nelson Boyer; Glenn E. Holland; John F. Seely
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Paper Abstract

The fabrication and the fundamental study of a repetitive nanosecond x-ray generator having a sealed field emission x-ray tube is described. A compact Marx generator storing 12 Joules directly drives a field emission tube with voltage pulses > 380 kV and with < 4 nanosecond risetime from an equivalent generator-impedance of 52 Ω. A numerical model is used in which the x-ray tube's cathode width and anode-cathode gap (AK) spacing are permitted to change with time while electron flow between the cathode and anode is space-charge-limited (SCL) and nonrelativistic. Coupling this model to an equivalent circuit representation of the Marx generator, which includes the voltage variation of the BaTiO3 Marx capacitors, an estimation of the cathode current, anode-cathode potential and the x-ray spectrum was obtained and compared with measured values.

Paper Details

Date Published: 23 October 2002
PDF: 12 pages
Proc. SPIE 4781, Advances in Laboratory-Based X-Ray Sources and Optics III, (23 October 2002); doi: 10.1117/12.450967
Show Author Affiliations
Craig Nelson Boyer, Universities Space Research Associates (United States)
Glenn E. Holland, SFA, Inc. (United States)
John F. Seely, Naval Research Lab. (United States)

Published in SPIE Proceedings Vol. 4781:
Advances in Laboratory-Based X-Ray Sources and Optics III
Ali M. Khounsary; Carolyn A. MacDonald, Editor(s)

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