disintegration energy, \(Q\)

https://doi.org/10.1351/goldbook.D01787
Energy liberated in a decay process and carried as kinetic energy of the emitted alpha or beta particle and the recoil energy of the product atom.
Source:
Green Book,2nd ed., p. 22 (https://www.cintegrado.com.br/site/documentos/green_book_2ed.pdf)