Roentgen to Rad Conversion

$100\ Rad = 1 \frac{J}{Kg}$

$1\ R = 2.58*10^{-4}\frac{C}{Kg}$

$\text{Average Ionization Energy for Air} = 34\frac{eV}{Ion}$

$1\ eV = 1.6022*10^{-19}\ J$

$1.610*10^{-19}\frac{C}{Ion}$

$1\ R = \left ( \frac{ 2.58*10^{-4}\ C}{Kg} \right ) \times \left ( \frac{34\ eV}{Ion}\right ) \times \left ( \frac{ion}{1.610*10^{-19}\ C}\right ) \times \left ( \frac{1.6022*10^{-19}\ J}{eV}\right )$

$1\ R = 0.0087295\frac{J}{Kg}$

$1 \ R = 0.0087295\frac{J}{Kg} * \frac{100\ Rad}{1 \frac{J}{Kg}}$

$1\ R = 0.087295\ Rad$

$1.14554\ R = 1\ Rad$

$114 \approx 100\ Rad$

Reproducibility with 137Cs

Thesis