The small binding energy of the deuteron indicates that the maximum of U(r) **** only just inside the range R of the square well potential. Use this information to estimate the value of V0 if R is approximately 1.5 fm.
The inside wave function u1 = Asinkr is maximum at r ≈ R. Therefore
Substituting ℏc = 197.3MeV − fm, Mc2 = 940MeV, R = 1.5fm and W = 2.2Mev, we find V0 ≈ 47 MeV
