LB Thesis NewSNR Corrections

First plot the efficiency corrected activity as a function of concentration. These points are not weighted by mass, but they are fully corrected as per the thesis otherwise. These values are the activity at the highest value of N/B

This plot doesn't look very good as the 50% sample has a lower activity than the 10% sample. Try plotting this at the time of beam off. Note these are done using fits with the accepted half life vs. the experimental half life. The error bars represent |(Free Fit A) - (Fixed Fit A)|

Perhaps the difference comes from the fact that the irradiation times were different, but to normalize to a standard beam time, a reference material must be used. Segebade says "Since, as already mentioned, yield values are normalized for a common exposure period of one hour, the following expression is required, which converts the individual activities yielded using other irradiation times to those after standard exposure period T (1h):

[math] N(T) = \frac{A_{0,el}}{A_{0,Ni}} \times \frac{(1-e^{-\lambda_{el}T})}{(1-e^{- \lambda_{el} T_i})} \times \frac{(1-e^{- \lambda_{Ni} T_i})}{(1-e^{-\lambda_{Ni} T})} [/math]

Where [math] T_i [/math] is the actual exposure period and T is the normalized exposure period of 1 hour"

So lets try to correct these ratios using Nickel

For correcting the 50%, we have (note these are the fixed fit values)

[math] N(T) = 0.62 \times \frac{0.52}{0.32} \times \frac{0.01}{0.02} = 0.50 [/math]

This ratio is lower than its original value (0.62), which makes sense because the nickel would not die off as much in the beam. The 10% and 1% values should not need this correction as they were irradiated for an hour, so the correction goes to unity. Plot the ratio of the specific activity as a function of concentration.