William P. Gammel edited par_After_the_settings_were__.tex  over 8 years ago

Commit id: e59f5b34b9b65f7e0a6442541dfae6a850659ba3

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\par After the settings were optimized, samples of Cs-137 and Co-60 were stacked on top of of one another, and were placed approximately $2 cm$ away from the scintillator. Correlation between the channel number and the energy was produced by assigning known energy values to channel numbers. The simplest way to do this is by finding the known values of the photopeak energies for both Cs-137 and Co-60 and manually assigning them to the channel numbers associated with the photopeaks seen in the collected spectral data. The photopeak value for Cs-137 and Co-60 are, 661.6 keV, 1.17 MeV, and 1.33 MeV respectively. While it is possible to calibrate the program with just Cs-137, we decided upon using both Cs-137 and Co-60 since C-137 has only one photopeak, and we wanted to increase the accuracy of the correlation by calibrating the program off of three different values instead of one. Figure ~ref{fig:Callibration} ~\ref{fig:Callibration}  show the spectral distribution for the stacked sources Cs-137 and Co-60, and the calibrated energy values associated with peaks in the data.