The Beta-Ray Spectrum of Antimony (124)

Abstract

The continuous beta-ray spectrum of ${\mathrm{antimony}}^{124}$ has been investigated with a 180° type of spectrometer. The spectrum consists of two components, the end points of which are: 0.74±0.03 Mev and 2.45±0.07 Mev. The difference between these end points, 1.71±0.07 Mev, agrees with the known value of the hard gamma-ray from ${\mathrm{Sb}}^{124}$. In addition, internal conversion lines, probably due to the decay of a long-lived Te isotope present in the source, have been observed. These lines correspond to gamma-ray energies of 0.23 Mev and 0.61 Mev. In conclusion, a possible energy level scheme representing this transition is discussed.