effective thermal cross-section

https://doi.org/10.1351/goldbook.E01899
A fictitious cross-section for a specified reaction, which, when multiplied by the 2200 @M03884@-per-second flux density, gives the correct reaction rate for @T06307@.
See also:
microscopic 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]