Nuclear reactions are performed for artificial transmutation of elements there are two types of nuclear reactions, exoergic and endoergic. In exoergic reactions energy is released. In endoergic reactions energy has to supplied for the reaction proceed. In exoergic reactions nuclear energy is converted into kinetic energy. In endoergic reactions, energy input is required in the form of kinetic energy to be converted into nuclear binding energy. The minimum energy required for the reaction to take place is called threshold energy consider the reaction –
p + 
→ 
+ 
Atomic masses are:
m( 
–atom) = 1.007825 amu (u)
m( 
–atom) = 3.016049 amu (u)
m( 
–atom) = 2.014102 amu (u)
(i) Protons are incident on 
at rest. The threshold energy for the reaction is –
are incident on protons. Threshold energy is – 20 MeV (iii) Which of the following is true – Threshold energy does not depend on Q-value of reaction
Text Solution
Verified by Experts5.4
Ans.
(i)
Sol. 5.4 MeV
(ii)
Sol. 16 MeV
(iii)
Sol . Threshold energy does not depend on which particle is at rest
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