Nuclear Science and Engineering / Volume 6 / Number 2 / August 1959 / Pages 140-146
Technical Paper / dx.doi.org/10.13182/NSE59-A25644
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Permissible void volume in photon shields is calculated in terms of shield thickness, photon energy, and permissible leakage factor. Several graphical aids for lead are presented. A simple method of void evaluation is included which may form the basis for an engineering acceptance test.