Capintec CRC-25R - MULTIPLICATION FACTORS FOR CA47 ACTIVITY MEASUREMENTS; MULTIPLICATION FACTORS FOR NI56 ACTIVITY MEASUREMENTS

CAPINTEC, INC CRC
®
-25R
Multiplication factors for Ca47 Activity Measurements:
Use a Calibration Number of 373 and a multiplication factor as indicated in the following table
to obtain Ca47 activity at time “t” days after an initially pure source of Ca47 is obtained.
Ca47
t
[days]
Multiplication
Factor
t
[days]
Multiplication
Factor
0 1.000 12 0.672
1 0.950 14 0.648
2 0.906 16 0.627
3 0.869 18 0.609
4 0.836 20 0.594
5 0.806 25 0.566
6 0.781 30 0.545
7 0.757 40 0.519
8 0.737 50 0.496
9 0.718 100 0.485
10 0.701 150 0.484
Multiplication factors for Ni56 Activity Measurements:
Use a Calibration Number of 844 and a multiplication factor as indicated in the following table
to obtain Ni56 activity at time “t” days after an initially pure source of Ni56 is obtained.
Ni56
t
[days]
Multiplication
Factor
t
[days]
Multiplication
Factor
0 1.000 9 0.824
1 0.985 10 0.799
2 0.969 12 0.745
3 0.952 15 0.659
4 0.934 20 0.508
5 0.915 25 0.366
6 0.894 30 0.249
7 0.872 40 0.101
8 0.849 60 0.013
A3 - 2 APPENDIX III July 07