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Question _ Drive Q value equation in nuclear reaction kinematics?

Question _ Drive Q value equation in nuclear reaction kinematics?

Grade:12th pass

1 Answers

Arun
25763 Points
2 years ago
 

In writing down the reaction equation, in a way analogous to a chemical equation, one may in addition give the reaction energy on the right side:

.QTarget nucleus + projectile -> Final nucleus + ejectile + 

For the particular case discussed above, the reaction energy has already been calculated as Q = 22.4 MeV. Hence:

63Li  21H  →  42He  22.4 MeV

The reaction energy (the "Q-value") is positive for exothermal reactions and negative for endothermal reactions. On the one hand, it is the difference between the sums of kinetic energies on the final side and on the initial side. But on the other hand, it is also the difference between the nuclear rest masses on the initial side and on the final side (in this way, we have calculated the Q-value above).

Q value is just the reaction energy of any reaction.

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