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：2025/12/06
half-value thickness
（ plural ）
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the thickness of a given shielding material required to halve a given type of radiation
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half-value thickness
The half-value thickness of lead for 662 keV gamma rays is approximately 1.2 cm, so we designed the shielding accordingly.
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The half-value thickness of lead for 662 keV gamma rays is approximately 1.2 cm, so we designed the shielding accordingly.
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