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RDF Terms

Half-Value Thickness

Applicable units are those of quantitykind:Length

The "Half-Value Thickness" is the thickness of the material at which the intensity of radiation entering it is reduced by one half.

http://en.wikipedia.org/wiki/Half-value_layer

http://www.iso.org/iso/catalogue_detail?csnumber=31895

The "Half-Value Thickness" is the thickness of the material at which the intensity of radiation entering it is reduced by one half.

d_{1/2}