resonance integral

in radiochemistry
https://doi.org/10.1351/goldbook.R05338
The integral, over all or some specified portion of the resonance energy range, of the cross-section divided by the energy of a radiation.
Source:
PAC, 1994, 66, 2513. (Nomenclature for radioanalytical chemistry (IUPAC Recommendations 1994)) on page 2525 [Terms] [Paper]