| 摘要 |
A structure for shielding X-ray and gamma radiation, which is of laminated construction having at least n layers made of materials different from each other (11, 12, ... 1n), where n is higher than or equal to two, and each of the first n-1 layers (e.g. 12) comprises an element converting at least a part of the X-ray or gamma radiation to be shielded or, of the secondary radiation emitted by the preceding layer (e.g. 11), respectively, into an X-ray or gamma radiation the energy of which is obove the energy level defined by the K-edge of the next layer (e.g. 13). |
