ION IRRADIATION DEVICE AND ION IRRADIATION METHOD
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United States of America Patent
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app pub date -
Aug 24, 2015
filing date -
Mar 12, 2014
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Abandoned
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Abstract
Positive ions that fly within an ion acceleration tube are accelerated by a plurality of acceleration electrodes arranged within the ion acceleration tube and are irradiated to an irradiation target. A plurality of magnet devices is arranged within the ion acceleration tube; the directions of the lines of magnetic force formed respectively by the magnet devices are made to differ between the adjacent magnet devices by an angle of more than 0 degree and at most 90 degrees or less; and each of the lines of magnetic force is rotated in one direction within the ion acceleration tube. Electrons travelling in reverse within the ion acceleration tube are made to intersect the lines of magnetic force, and made to increase a distance from a flying axis while traveling in reverse. Since the electrons collide with members within the ion acceleration tube and stop before having high energy, high-energy X-rays are not generated.
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