Problem 6.276

Using the tabular values of atomic masses, find the threshold kinetic energy of an alpha particle required to activate the nuclear reaction $\mathrm{Li}^{7}(\alpha, n) \mathrm{B}^{10} .$ What is the velocity of the $\mathrm{B}^{10}$ nucleus in this case?

4.4 \mathrm{MeV} ; 5.3 \cdot 10^{6} \mathrm{~m} / \mathrm{s}

Nuclear Reactions