(Figure 1) shows the decay scheme for 137Cs, which has two possible beta decay modes. The first, labeled β1, is a decay directly to the ground state of 137Ba. The second beta decay (β2) is to an excited state 137Ba∗. This excited state subsequently undergoes gamma decay to the ground state. In beta decay, the maximum possible energy of the emitted beta particle is equal to the difference in energy between the initial and final states of the nucleus. The maximum energy of β2 has been measured to be 0.5120 MeV. Atomic mass of 137Ba is 136.9058274 u, atomic mass of 137Cs is 136.9070895 u. What is the maximum energy of the beta particle β1? What is the energy of the gamma ray?
(Figure 1) shows the decay scheme for 137Cs, which has two possible beta decay modes. The first, labeled β1, is a decay directly to the ground state of 137Ba. The second beta decay (β2) is to an excit...
(Figure 1) shows the decay scheme for 137Cs, which has two
possible beta decay modes. The first, labeled β1, is a decay
directly to the ground state of 137Ba. The second beta decay (β2)
is to an excited state 137Ba∗. This excited state subsequently
undergoes gamma decay to the ground state. In beta decay, the
maximum possible energy of the emitted beta particle is equal to
the difference in energy between the initial and final states of
the nucleus. The...
Phosphorus-32 (P-32) is used in nuclear medicine as therapeutic
agent in the treatment of several diseases. P-32 has a half life of
14.3 days and decays directly to its ground state by emitting a
beta-minus particle. The decay table for P-32 is given. There are
no excited energy states or other radiation emitted during this
decay; therefore, P-32 is referred to as a "pure beta emitter.
A P-32 sample is prepared in the manufacturing site with
an initial activity of...