self-shielding

https://doi.org/10.1351/goldbook.S05587
The lowering of the @F02461@ density in the inner part of an object due to absorption in its outer layers.
Source:
PAC, 1994, 66, 2513. (Nomenclature for radioanalytical chemistry (IUPAC Recommendations 1994)) on page 2525 [Terms] [Paper]