| 摘要 |
<p>Irradiation of a target material (208) disposed around a reel (204) rotated about an axis (206) perpendicular to the sweep of a beam of radiation (200) produces a linear relationship between the depth into the target material (208) and the radiation dose received. Where the core (210) of the reel (204) is sufficiently transparent to the radiation beam (200), target material (208) located on the backside of the reel (204) 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.</p> |
