Question

1. Use the SEMF to (a) calculate M(A, Z) for 39Ca and 40Ca (b) for each of these isotopes, calculate the mass excess d = [M(A, Z) – Amy] /m, (in units of "u")

And the hint to this question is:

Thank you in advance.

Answer 1

(Pl note that while doing the calculations, the final answer changes with the approximate conversion factor we considers. I have obtained a little deviated value compared to the given by you. keep in mind that the procedure given is correct only you have to decide where to truncate the conversion factors)

weiz sacker Semi- empirica mass formala :- For MeV) = ar A -a A13 _ qc 22 - 9 (A-222 Á Io (A, 2) Avg 21 = 15.76 A-17.81 AT 0.711 22 - - 23.7CN-Z)2 -3/4 + 34 A for 30 co, A-39, 2 = 20 B.E. = 9gt. 67 321-459 mer B.A. = 932.621 mer Comass of atermic nucleus

Dai CIBS MCZ, A) = NMn + 2 Mp - BE (14) a = 931.478 Men lu- 931.478 mer 395 7102, • TTCA, A) = (1981.0086654 +2ox 1.0078254 931-4 M 120,39) MCA - 36302.25 Mevlo2 - 321.459 2 4 M (20,40) = 37233.7 Mev/12 Encess mass 6- [MCA, Z) - Ama] Imo 839 = [M139,20) - 39x931.478 7 931.478 -0.0272599 u 27259.9 ull [M(40,20) - 40x931.478 931.478 zug -0.0272 89.96 = -27289.9rull