Long-life 2kHz x-ray preioniser

Simon J. Scott

doi:10.1117/12.184581

16 August 1994 Long-life 2kHz x-ray preioniser

Simon J. Scott

Proceedings Volume 2206, High-Power Gas and Solid State Lasers; (1994) https://doi.org/10.1117/12.184581
Event: Europto High Power Lasers and Laser Applications V, 1994, Vienna, Austria

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.

Citation Download Citation

Simon J. Scott "Long-life 2kHz x-ray preioniser", Proc. SPIE 2206, High-Power Gas and Solid State Lasers, (16 August 1994); https://doi.org/10.1117/12.184581

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