The Adaptation of the Cauchois Spectrograph to Artificial Radioactive Sources

Abstract

The transmission (Cauchois) type curved crystal spectrograph has been found to be a practical instrument for photographing characteristic x-rays associated with radioactive decay. A photograph of x-rays associated with the decay of 6.7-hour ${\mathrm{Cd}}^{107,109}$ is shown. X-rays emitted during the decay of 2.7-day ${\mathrm{In}}^{112}$ and 12.8-hour ${\mathrm{Cu}}^{64}$ have also been identified.