Since the cross section of cadmium for neutrons is about 104 barns, cadmium tar­gets have to be placed in the nuclear reactors very carefully. Cd-115m is produced by the 114Cd(n, Y)115mCd nuclear reaction. Its half-life is 44.6 days, and it emits в_ and gamma radiation.

8.6.16 Indium Isotopes

In-111 is produced in cyclotrons. Its half-life is 2.8 days, and it disintegrates with electron capture and gamma radiation.

In-114 is produced by the 113In(n, Y)114 in nuclear reaction. Its half-life is 72 s, and it disintegrates with electron capture and в_ and gamma radiation. This nuclear reaction is used for the measurement of neutron flux in neutron generators.

In-114m is produced by the 113In(n, Y)114mIn nuclear reaction. Its half-life is 50 days, and it disintegrates with electron capture and в_ and gamma radiation.