| 摘要 |
<p>In a radiation chamber (19), the target to be irradiated is arranged on both sides of the opening of a pool of water (20) in which a radioactive source (22) in the form of a plaque is immersed. Under timed control, the radioactive source (22) is drawn incrementally through the chamber (19) so as to irradiate segments of the target in accordance with a predetermined scan coder.</p> |
