LB 170048 Nickel Foil Consistency Check

Since the Selenium activities are not matching predicted values, check nickel foils from the front and rear to try and get that the activity is the same. Below is a table of pictures and information from ROOT sessions. For each of these, the spectrum was weighted by the inverse of the mass. For the front foil the mass was 1.3310g and for the rear foil the mass was

	5/23/17	5/26/17	5/29/17	5/29/17	5/30/17
Original Window Counts	880200	716200	617100	545800	394100	362000	346300
Original Window Background (Integrated)	381379	267608	215260	189665	143921	137541	128197
Original Window Difference	498821	448592	401850	356135	250179	224459	218103
Expanded Window Counts	970900	782600	671300	593100	426700	395400	378100
Expanded Window Background	468138	333633	269025	236476	173353	170089	159644
Expanded Window Difference	502762	448967	402275	356624	253347	225311	218456
Error in counts	3941	375	425	489	3168	852	353
.dat file entry	7.416220118 +/- 0.0079006297	7.343988145 +/- 0.0008359489264	7.216858801 +/- 0.0010576086	7.079282677 +/- 0.0013730748	6.908471023 +/- 0.012662933	6.704677244 +/- 0.0037957934	6.622841784 +/- 0.0016185014