Dose Calculations and 137Cs Shot Log

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Source Calibration and Dose Rate Data

Date Initial Source Strength (Ci) Current Source Strength (Ci) Distance to Source (cm) Exposure Rate (Roentgen/hr)°
6/27/17 20 9.3 30.5 17.691
9/11/17 20 9.3 30.5 17.606

°Calculated by TSO using [math]\dot x = \frac {\Gamma A }{ D^2} [/math]

Total dose calculated by [math]\int\limits_{t_0}^{t_f}\dot x\ dt [/math]

137Cs Shot Log

Dot OSLs

Date Run Number Run Time (s) Distance to Source Number of OSLs in Stack
9/8/17 1 5660 30cm 11
9/8/17 1 5660 30cm 11
9/26/17 2 4500 30cm 11
9/26/17 2 4500 30cm 11

Nanodot OSL Quality Control

Date Run Number Run Time (s) Distance to Source Number of OSLs Total Exposed Dose Measured Dose Adjusted Dose
10/12/17 1 284.04 30.5cm 3 - - -



Reproducibility with 137Cs