Characteristics of the low photon energy plasma x-ray generator

Eiichi Sato; Hiroyuki Toriyabe; Michiaki Sagae; Yasuomi Hayasi; Tatsumi Usuki; Koetsu Sato; Hideaki Ido; Kazuyoshi Takayama; Yoshiharu Tamakawa

doi:10.1117/12.450788

19 December 2001 Characteristics of the low photon energy plasma x-ray generator

Eiichi Sato, Hiroyuki Toriyabe, Michiaki Sagae, Yasuomi Hayasi, Tatsumi Usuki, Koetsu Sato, Hideaki Ido, Kazuyoshi Takayama, Yoshiharu Tamakawa

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Proceedings Volume 4508, Penetrating Radiation Systems and Applications III; (2001) https://doi.org/10.1117/12.450788
Event: International Symposium on Optical Science and Technology, 2001, San Diego, CA, United States

Abstract

The tentative experiment for production low photon energy characteristic x-rays using a capillary is described. The capillary of this flash x-ray tube was improved in order to increase the x-ray intensity and to generate high-intensity characteristic x-rays by forming the linear plasma x-ray source. The generator consists of a high-voltage power supply, a polarity-inversion ignitron pulse generator, a turbo-molecular pump, and a radiation tube with a capillary. A high-voltage condenser of 0.2(mu) F in the pulse generator is charged up to 20 kV by the power supply, and the electric charges in the condenser are discharged to the capillary in the tube after closing the ignitron. In the present work, the pump evacuates air from the tube with a pressure of about 1 mPa, and the aluminum anode and cathode electrodes are employed to produce characteristic x-rays. The diameter and the length of the capillary are 2.0 and 29 mm, respectively, and both the cathode voltage and the discharge current displayed almost the damped oscillations. The peak values of the voltage and current increased when the charging voltage was increase, and their maximum values were -9.2 kV and 4.6 kA, respectively. The x-ray durations detected by a 1.6 micrometers aluminum filter were less than 10microsecond(s) , and we observe the intensity of aluminum characteristic x-rays.

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Eiichi Sato, Hiroyuki Toriyabe, Michiaki Sagae, Yasuomi Hayasi, Tatsumi Usuki, Koetsu Sato, Hideaki Ido, Kazuyoshi Takayama, and Yoshiharu Tamakawa "Characteristics of the low photon energy plasma x-ray generator", Proc. SPIE 4508, Penetrating Radiation Systems and Applications III, (19 December 2001); https://doi.org/10.1117/12.450788

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KEYWORDS

X-rays

Capillaries

Aluminum

Plasma

Pulse generators

Electrons

Power supplies

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