Westcott cross-section

https://doi.org/10.1351/goldbook.W06672
See:
effective thermal cross-section
Sources:
Orange Book, 2nd ed., p. 218 [Terms]
PAC, 1994, 66, 2513. (Nomenclature for radioanalytical chemistry (IUPAC Recommendations 1994)) on page 2517 [Terms] [Paper]