resonance energy

in radiochemistry
https://doi.org/10.1351/goldbook.R05334
The @E02102@ of a particle entering a nuclear reaction, this energy being just sufficiently high to lead to the formation of reaction products in one of their excited states.
Source:
PAC, 1994, 66, 2513. (Nomenclature for radioanalytical chemistry (IUPAC Recommendations 1994)) on page 2525 [Terms] [Paper]