Calculate the Q value of the dp reaction on 19F Tries 115 Pr

Calculate the Q value of the (d,p) reaction on 19F. Tries 1/15 Previous Tries If the incident deuteron energy is 8.9 MeV in the laboratory coordinate system, what is the deuteron energy in the center-of-mass coordinate system? Tries 0/15

Solution

Ans for Part A:

Q value of the reaction is the amount of energy released by that reaction.

we find the Q value for the reaction as follows,

₉F¹⁹ + ₁H² --- > ₁p¹+ ₉F²⁰ + Q

mass of ₉F¹⁹ = 18.99840322 amu;

mass of ₂H¹ =2.01410178 amu;

mass of ₉F²⁰ = 19.99998132 amu;

mass of ₁p¹ = 1.00727647 amu.

Q = ((18.99840322 + 2.01410178) - (19.99998132 + 1.00727647))c² ;

we consider as natural units, (c = 1), then the Q value is 0.00524721 amu; (1 amu = 931.494095 MeV)

Q value = 4.887745 MeV. where the Q value is positive, so the reaction is exoergic.