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Proceedings Paper

Long-life 2kHz x-ray preioniser
Author(s): Simon J. Scott
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Paper Abstract

A fast risetime, 2 kHz, long-lifetime x-ray preionizer has been developed. The device is intrinsically rugged and simple and a lifetime of 2.5 X 108 shots has been demonstrated with an estimated potential lifetime in excess of 109 shots. The system is based around a highly evolved form of corona plasma (surface discharge) cathode. The life- limiting factors of this type of cathode were identified and overcome in the course of the development program. The device operates at approximately 95 kV and is capable of creating preionization electron densities of > 107 cm-3 in 1 atm. of Ne after the x rays have traveled 4 - 5 cm and passed through 1 mm of steel and 2 mm of aluminum. Beam uniformity and reproducibility are maintained at 2 kHz. Very homogenous glow discharges at repetition rates up to 1.5 kHz have been obtained in a prototype industrial grade XeCl laser incorporating such a preionizer.

Paper Details

Date Published: 16 August 1994
PDF: 9 pages
Proc. SPIE 2206, High-Power Gas and Solid State Lasers, (16 August 1994); doi: 10.1117/12.184581
Show Author Affiliations
Simon J. Scott, British Aerospace (Operations) Ltd. (United Kingdom)


Published in SPIE Proceedings Vol. 2206:
High-Power Gas and Solid State Lasers
Markus Bohrer; Tommaso Letardi; Dieter Schuoecker; Horst Weber, Editor(s)

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