Diode for providing X-rays

Details Diode for providing X-rays Diode for providing X-rays

1989-11-09

1991-05-28

Howell, Janice A.

X-ray or gamma ray systems or devices

Source

Electron tube

378121, 378119, 378125, 378124, H01J 3506, H01J 3500, H01J 3510, H01J 3508

Patent

active

050200879

ABSTRACT:
Diode for providing X-rays. A diode for generating X-rays is adapted for connection to a source of high electrical energy with the diode having a first end from which the X-rays are emitted, a second end, and axis extending between the ends. The diode includes a ring cathode connected to the electron source and an intermediate anode spaced from the cathode with at least a portion of this anode being disposed between the ring cathode and the diode first end. The intermediate anode decelerates electrons to cause the generation of X-rays emitted from the diode first end. The diode also includes an intermediate cathode disposed radially outwardly of the intermediate anode and connected to this anode. The diode further includes an inverse anode spaced from the intermediate cathode and positioned radially outwardly of the intermediate cathode and between the intermediate cathode and between the intermediate cathode and the diode second end. The inverse anode also decelerates electrons to cause the generation of X-rays emitted from the diode first end generally radially outwardly of the X-rays resulting from operation of the intermediate anode. The inverse anode is connected to ground so that the diode forms a pair of anode-cathode gaps in series to divide the energy of the electrons and to cause more uniform emission of X-rays from the diode first end.

REFERENCES:
patent: 4359660 (1982-11-01), Smith et al.
Riordan et al., "Recent Bremsstrahlung Source Development at Physics International", Physics International Company, presented at DNA Advanced Pulse Power Conference, NVOO-Las Vegas, Nevada, Apr. 21-22, 1988.
Maxwell Laboratories, Inc., "Preliminary Engineering Design of Bremsstrahlung Source Module for AEETES Facility", MLR-260, Jun. 22, 1973.

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