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It has been found that, for the purpose of radiation protection, the dose rate induced by...

It has been found that, for the purpose of radiation protection, the dose rate induced by gamma rays of Cs-137 needs to be reduced by a factor of eight. Using the HVL for Cs-137 gamma rays of 1.26 and 0.57 cm for steel and lead respectively, what thickness of steel or lead shielding would be needed to comply with the requirement?

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