[填空题]
(a) Can the reaction s-,pmjz )pped )u9+v 9zizl;fc7rlw1i4o v0)i7td zy$_{3}^{7}\text{Li} + \text{p} \to _{2}^{4}\text{He} + \alpha$ occur if the incident proton has kinetic energy = 2500 keV?
(b) If so, what is the total kinetic energy of the products? MeV