Process for irradiation producing constant depth/dose profile
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United States of America Patent
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Jan 30, 2001
Grant Date -
N/A
app pub date -
Aug 6, 1999
filing date -
Aug 6, 1999
priority date (Note) -
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Abstract
Irradiation of a target material disposed around a reel rotated about an axis perpendicular to the sweep of a beam of radiation produces a linear relationship between the depth into the target material and the radiation dose received. Where the core of the reel is sufficiently transparent to the radiation beam, target material located on the backside of the reel is also irradiated, creating a constant relationship between depth into the target material and the radiation dose received. The depth/dose profile can be tuned to a constant value by varying parameters of the irradiation process, such as target material thickness, target material density, reel diameter, and energy of the applied beam of radiation.
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