X-ray or gamma ray systems or devices – Source – Electron tube
Patent
1989-08-07
1991-07-02
Church, Craig E.
X-ray or gamma ray systems or devices
Source
Electron tube
378137, 378138, H01J 3530
Patent
active
050291955
ABSTRACT:
Apparatus and method for deriving an x-ray beam from an electron beam striking an anode at a selected angle, the x-ray beam being selectively directed to achieve optimal high intensity yield of high energy bremsstrahlung photons for a given x-ray beam cross-section. The angle of the x-ray beam relative to the anode is selected (1) to prevent anode damage and (2) to minimize undesired multiple scatter, and (3) maximize high energy photon production in the bremsstrahlung spectrum. The angles of the incident electron beam and of the emitted x-ray beam and the angle of the planes normal to the anode surface and containing the electron beam and x-ray beam, respectively, are defined to account for multiple scattering and out-scattering of electrons as well as enhanced x-ray beam intensity, and angular distribution of emitted photons of a desired energy.
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Church Craig E.
Rose Howard L.
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