Radiant energy – Radiation controlling means
Reexamination Certificate
2005-01-18
2005-01-18
Lee, John R. (Department: 2881)
Radiant energy
Radiation controlling means
C250S251000
Reexamination Certificate
active
06844561
ABSTRACT:
A rotating aperture system includes a low-pressure vacuum pumping stage with apertures for passage of a deuterium beam. A stator assembly includes holes for passage of the beam. The rotor assembly includes a shaft connected to a deuterium gas cell or a crossflow venturi that has a single aperture on each side that together align with holes every rotation. The rotating apertures are synchronized with the firing of the deuterium beam such that the beam fires through a clear aperture and passes into the Xe gas beam stop. Portions of the rotor are lapped into the stator to improve the sealing surfaces, to prevent rapid escape of the deuterium gas from the gas cell.
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Brian Rusnak et al., “A Deuterium Accelerator for Neutron Radiography”, Nov. 11, 2001, American Nuclear Society Winter Meeting, Reno, NV.
Hall James M.
Rusnak Brian
Shen Stewart
Wood Richard L.
Daubenspeck William C.
Gottlieb Paul A.
Lee John R.
Smith II Johnnie L
The United States of America as represented by the United States
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