LB Thesis Thin Window Analysis

This will be a detailed explanation of how to trace the isotope of interest's activity back to its original value. The sample of interest here is the oven ash sample with inventory number 170063.

Thin Window Histograms

Since the resolution of Detector A at the IAC is about 1 keV, the window in which the signal is viewed should have a width of 2 (whether you plot channel number or energy along the horizontal axis). Below is a sample of a signal viewed in the original window and the thin window. The signals were fit with a function of the form

[math] f(x) = C + Ae^{\frac{(x-\xbar)^2}{2 \sigma^2}} [/math]

This signal corresponds to the 103 keV line of Se-81. I plotted channel number instead of energy to maintain integer bins and avoid a picket fencing effect in the signal.