LB Thesis SNR

Background Analysis

In order to find the SNR at [math]\displaystyle{ t_{Beam Off} }[/math], the background was analyzed to check if it remained constant from [math]\displaystyle{ t_{Beam Off} }[/math] until [math]\displaystyle{ t_{Measure} }[/math]. First, the background was plotted for each concentration of Se/Soil and was overlaid with the the background in the pure sample for each respective target.

The clearest exponential behavior is seen in the 1% sample. The background rate dropped by 62% between the first and second measurements ([math]\displaystyle{ \delta t }[/math] = 7.5 minutes). This indicated that considering the background to be constant from [math]\displaystyle{ t_{Beam Off} }[/math] until [math]\displaystyle{ t_{Measure} }[/math], which was an average of