X-ray generator using hemimorphic crystal

Details X-ray generator using hemimorphic crystal X-ray generator using hemimorphic crystal

2006-01-27

2010-06-01

Glick, Edward J (Department: 2882)

X-ray or gamma ray systems or devices

Source

Reexamination Certificate

active

07729474

ABSTRACT:
An X-ray generator uses a high electrical field generated when a hemimorphic crystal is heated or cooled. The crystal may be lithium niobate polarized in one direction. An X-ray target is placed inside a housing inside which a vacuum is maintained. A tungsten line containing thorium is placed between the crystal and the target. When the crystal is heated or cooled by a Pelletier element, an intense electrical field is generated around the crystal. Thermoelectrons released from the tungsten line accelerate as a result of the electrical field and collide with the X-ray target. The X-rays released at this time radiate through a beryllium window exteriorly of the housing. Intense X-rays are generated without using large scale equipment, such as a high voltage power source.

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X-Ray Fluoresced High-Z(Up to Z=82)K X Rays Produced by LiNbO3and LiTaO3Pyroelectric Crystal Electron Accelerators, Brownridge, et al., Applied Physics Letters, vol. 85, No. 7, Aug. 16, 2004, pp. 1298-1300.
Investigations of Pyroelectric Generation of X Rays, Brownridge, et al., Journal of Applied Physics, vol. 86, No. 1, Jul. 1, 1999, pp. 640-647.

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