| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a radiation shielding wall surely preventing radiation leakage without using lead at all, and reducing cost. Ž<P>SOLUTION: The radiation shielding wall is constituted by sandwiching a steel plate 4 having a required thickness between layers of a layered product formed by laminating at least two lead-free radiation protection materials 3a, 3b. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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