when d nuclear reaction represented as shown below is endothermic , d reaction energy is Q is -ve .for d reaction to proceed d incoming particle must hava minimum energy called threshold energy Eth .Some fraction of d energy of d incident particle is transfered to d compound nucleus to conserve momentum therefore Eth must b greater dan Q Then find d threshold energy Etha+ X ....> Y+bX is target nucleusa is bombarding particle Y is daughter nucleus b is outgoing par

Amit Saxena , 10 Years ago

Grade upto college level