Radiant energy – Radiant energy generation and sources – With radiation modifying member
Patent
1977-09-28
1979-03-06
Smith, Alfred E.
Radiant energy
Radiant energy generation and sources
With radiation modifying member
250505, G03B 4100
Patent
active
041432754
ABSTRACT:
Method and apparatus for applying radiation by producing X-rays of a selected spectrum and intensity and directing them to a desired location. Radiant energy is directed from a laser onto a target to produce such X-rays at the target, which is so positioned adjacent to the desired location as to emit the X-rays toward the desired location; or such X-rays are produced in a region away from the desired location, and are channeled to the desired location.
The radiant energy directing means may be shaped (as with bends; adjustable, if desired) to circumvent any obstruction between the laser and the target. Similarly, the X-ray channeling means may be shaped (as with fixed or adjustable bends) to circumvent any obstruction between the region where the X-rays are produced and the desired location.
For producing a radiograph in a living organism the X-rays are provided in a short pulse to avoid any blurring of the radiograph from movement of or in the organism. For altering tissue in a living organism the selected spectrum and intensity are such as to affect substantially the tissue in a preselected volume without injuring nearby tissue. Typically, the selected spectrum comprises the range of about 0.1 to 100 keV, and the intensity is selected to provide about 100 to 1000 rads at the desired location.
The X-rays may be produced by stimulated emission thereof, typically in a single direction.
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Pound et al., "Gravitational Red Shift in Nuclear Resonance," Physical Review letters, 3(9), 439-441 (1959).
Applebaum David C.
Epstein Harold M.
Fairand Barry P.
Gallagher William J.
Jung Richard G.
Anderson B. C.
Battelle (Memorial Institute)
Dunson Philip M.
Smith Alfred E.
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