Conventional metal plasma x-ray-flash techniques using vacuum discharges

Eiichi Sato; Michiaki Sagae; Shingo Kimura; Teiji Oizumi; Yasuomi Hayasi; Yoshiharu Tamakawa; Yutaka Ohta; Shogo Suzuki; Haruo Obara; Hiroshi Seino; Toru Yanagisawa

doi:10.1117/12.145732

1 January 1993 Conventional metal plasma x-ray-flash techniques using vacuum discharges

Eiichi Sato, Michiaki Sagae, Shingo Kimura, Teiji Oizumi, Yasuomi Hayasi, Yoshiharu Tamakawa, Yutaka Ohta, Shogo Suzuki, Haruo Obara, Hiroshi Seino, Toru Yanagisawa

Author Affiliations +

Proceedings Volume 1801, 20th International Congress on High Speed Photography and Photonics; (1993) https://doi.org/10.1117/12.145732
Event: 20th International Congress on High Speed Photography and Photonics, 1992, Victoria, BC, Canada

Abstract

The fundamental studies for producing plasma flash x rays using three types of generators are described. The flash x-ray generators used in this experiment are as follows: (a) solid-anode radiation tubes in conjunction with a large-capacity condenser of 199 nF, (b) liquid-anode radiation tubes utilizing a combined ceramic condenser of 10.7 nF, and (c) a flash vacuum ultraviolet (VUV) tube having a surface-discharge-glass substrate driven by a polarity- inversion-type transmission line with a condenser capacity of 14.3 nF. The radiation tubes were of the demountable types and were connected to vacuum pumps with pressures of about 1 X 10^-3 Pa. Using type (a) and (b) generators, each condenser was charged from 40 to 60 kV by a power supply, and the electric charges in the condenser were discharged to the radiation tube after the triggering. In contrast, when a type (c) generator was employed, the condenser was charged from -20) to -30) kV, and the maximum output voltages of about -1) times the charged voltages were produced after closing a gap switch. Using these generators, the plasma flash x rays were easily generated, and high-intensity soft x rays of about 10 keV were obtained by using a solid-anode radiation tube. In particular, although the K(alpha) satellites were produced when a type (a) generator with a copper anode is employed, the intensities of the spectrum lines including satellites of copper K(alpha) were considered to be amplified by using a double anode (tungsten mounted copper anode).

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Eiichi Sato, Michiaki Sagae, Shingo Kimura, Teiji Oizumi, Yasuomi Hayasi, Yoshiharu Tamakawa, Yutaka Ohta, Shogo Suzuki, Haruo Obara, Hiroshi Seino, and Toru Yanagisawa "Conventional metal plasma x-ray-flash techniques using vacuum discharges", Proc. SPIE 1801, 20th International Congress on High Speed Photography and Photonics, (1 January 1993); https://doi.org/10.1117/12.145732

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