X-ray or gamma ray systems or devices – Source – Electron tube
Patent
1986-05-09
1990-08-07
Howell, Janice A.
X-ray or gamma ray systems or devices
Source
Electron tube
378106, 378140, H01J 3522
Patent
active
049474154
ABSTRACT:
An apparatus for producing high energy, pulsed, flash X-rays which is of a useful laboratory-scale size. The apparatus includes a hydrogen thyratron coupled between a D.C. power source and a low impedance Blumlein, and a low impedance X-ray head. The thyratron is in a grounded grid configuration and provides a commutated input voltage to the Blumlein at a high repetition rate. The switching waveform output of the Blumlein is applied across a pair of spaced electrodes in the X-ray head to produce an X-ray emitting discharge therebetween. A portion of the electrode assembly is preferably cast integral in an insulating base plate of the head. A pair of foil sheet conductors are preferably cast in the base plate to respectively connect the electrodes to the Blumlein. An apertured cover plate is mounted over the base plate with a seal ring interposed between the plates around the electrodes to establish a sealable evacuatable chamber around the discharge gap between the electrodes.
REFERENCES:
patent: 2341483 (1944-02-01), Stephen
patent: 2900542 (1959-08-01), McEuen
patent: 3783288 (1974-01-01), Barbour et al.
patent: 4039971 (1977-08-01), Wang et al.
patent: 4077020 (1978-02-01), Anderson et al.
patent: 4223279 (1980-09-01), Bradford, Jr. et al.
patent: 4423510 (1983-12-01), Pack et al.
patent: 4429228 (1984-01-01), Anderson
patent: 4498183 (1985-02-01), Levatter
patent: 4556981 (1985-12-01), Cirkel et al.
patent: 4563584 (1986-01-01), Hoffman et al.
patent: 4570106 (1986-02-01), Sohval et al.
"The Physics of Electricity and Magnetism", by Scott, 2nd Edition, John Wiley & Sons, 1966, p. 228.
"Flash X-Ray Tube . . . ", by Johnson et al., Rev. Sci. Instrum. 51(6), Jun. 1980, p. 741.
"A High Intensity, Fine Focus . . . ", by Ottewell et al., J. Phys. E. (G.B.), vol. 4, No. 10 (Oct. 1977).
"A High Energy Flash X-Ray Facility", by Gilbert et al., British Journal of NDT, May 1974.
"Off-Resonance Transformer Charging for 250 KV Water Blumlein", by Cook et al., IEEE Trans. on electron devices, vol. ED-26, No. 10, 10-1979.
"Flash X-Ray Actuated Trigger Switch", by Swift et al., Rev. of Scientific Instruments, vol. 39, No. 5, 5-1968.
Board of Regents , The University of Texas System
Freeman John C.
Howell Janice A.
LandOfFree
Flash x-ray apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Flash x-ray apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Flash x-ray apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-965910