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\subsection{Gamma Ray Spectroscopy}  \subsubsection{Determining the Unknown Sample}  In order to determine what element the unknown sample was, we kept all the same settings from the calibration trial. Since the software had been calibrated, the resulting spectrum that was displayed was plotted as the number of gamma rays observed at each integer value, versus Energy, in MeV. The sample was in a rather large container, so it was placed as close as possible to 2 cm, which was the distance away from the scintillator of the sources used in the calibration. The sample ran for $3670$ seconds Live Time, which is the actual time the data is being recorded. The program also lists a quantity called Real Time, which was deemed since it includes the time it takes the computer to process the data. The spectral distribution obtained from the multi-channel analyzer for the mystery source is shown in Figure (). \ref{fig:Unknown_Sample}.