Working on the same lines as an electron-position pair production, we notice that the reaction. `gamma rarr` Proton + antiproton, has the energy balance
`E=m_(0("Proton"))C^(2)+K.E_(("Proton"))+`
`m_(0("antiproton"))C^(2)+K.E_(("antiproton"))`
But `m_(0)C^(2)=` energy equivalent of `1.007276 a.m.u`
`~~ 938 MeV.[ because 1.007276xx931~~938 MeV]`
Thus `K.E`. of each particle
`=(1)/(2)[1896MeV-2xx938MeV]=10 MeV`.