LB Feb2017 Se Investigations
Neutron knockout on Se-82
While looking to see if certain lines are indeed selenium within the spectrum, it is worth noting that there are 2 states for Se-81. There is a metastable state with a 57 minute half life and a gamma emission of 103 keV. First I will attempt to show that this metastable state can indeed be seen in the spectrum.
Below is an overlay of 5 plots with different cuts in time.
The half life was calculated using the program /data/IAC/Se/Feb2017Run/LB_WeightedFit.C
Using the slope, the half life can be found to be 58.9 +/- 11 minutes
Below is a plot of the data when it is exponentiated