Repetitive Pulsed X-Ray Generator Utilizing A Triode

Eiichi Sato; Satoshi Kawasaki; Hiroshi Isobe; Yoshiharu Tamakawa; Toru Yanagisawa

doi:10.1117/12.962426

17 January 1990 Repetitive Pulsed X-Ray Generator Utilizing A Triode

Eiichi Sato, Satoshi Kawasaki, Hiroshi Isobe, Yoshiharu Tamakawa, Toru Yanagisawa

Proceedings Volume 1155, Ultrahigh Speed and High Speed Photography, Photonics, and Videography '89: Seventh in a Series; (1990) https://doi.org/10.1117/12.962426
Event: 33rd Annual Technical Symposium, 1989, San Diego, United States

Abstract

A repetitive pulsed x-ray generator utilizing a triode for biomedical radiography is described. This generator consisted of the following components: a high-voltage power supply, a cable condenser with a length of 10m and a capacity of about 1000pF, a repetitive impulse switching system, a turbo molecular pump, and a pulsed x-ray tube having a cold cathode. The x-ray tube was of the triode type which was connected to the turbo molecular pump and consisted of the following components: a rod-shaped anode tip made of tungsten, a ring cathode made of molybdenum, a ring trigger electrode made of iron and other parts. The trigger electrode was attached to the cathode electrode just inside of the x-ray window and the space between the cathode and trigger electrodes was less than 0.5mm. The anode-cathode (A-C) space was adjusted outside of the x-ray window for controlling the A-C impedance. The cable condenser was charged from 30 to 100kV by the constant voltage generator and was discharged repetitively by the impulse switching system utilizing a frequency control system with a high time resolution. The maximum frequencies varied according to the charging voltage, the condenser capacity which was determined by the length of the cable condenser, and the current capacity of the high-voltage power supply. The frequencies of this generator were less than 100Hz, and the pulse widths of the pulsed x-rays were less than 300ns. The time integrated x-ray intensity was less than 5.0pC/kg at 0.5m per pulse, and the effective focal spot size ranged from 0.5 to 3.0mm.

Citation Download Citation

Eiichi Sato, Satoshi Kawasaki, Hiroshi Isobe, Yoshiharu Tamakawa, and Toru Yanagisawa "Repetitive Pulsed X-Ray Generator Utilizing A Triode", Proc. SPIE 1155, Ultrahigh Speed and High Speed Photography, Photonics, and Videography '89: Seventh in a Series, (17 January 1990); https://doi.org/10.1117/12.962426

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available