In DEAP this parameter is called Fprompt. Nuclear recoil type events have high Fprompt (~0.7) values while electronic recoil events have a low Fprompt value (~0.3).
In DEAP, the parameter Fprompt serves as a distinguishing factor for various event types. High-energy nuclear events are characterized by high Fprompt values (~0.7), while low-energy electronic events have lower Fprompt values (~0.3).