infinite source thickness

https://doi.org/10.1351/goldbook.I03030
For a specified @R05048@, the minimum thickness of a flat preparation of a @R05077@ material where the @I03072@ of the specified radiation at the surface does not increase when the thickness is increased by adding more of similar @R05077@ material.
Source:
PAC, 1982, 54, 1533. (Glossary of terms used in nuclear analytical chemistry (Provisional)) on page 1544 [Terms] [Paper]
Citation: 'infinite source thickness' in IUPAC Compendium of Chemical Terminology, 3rd ed. International Union of Pure and Applied Chemistry; 2006. Online version 3.0.1, 2019. https://doi.org/10.1351/goldbook.I03030 RIS BibTex EndNote
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Last revised: February 24, 2014