Radius of Curvature Calculation

Go BackBelow are my calculations done for determining the radius of curvature of an electron/positron in the magnetic field for the pair spectrometer.The Lorentz force is the centripetal force acting upon the electron/positron in the magnetic field which gives the following equation.[math]  \frac{(m * v^2}{r} = q * v * B [/math]This equation can be rearranged to solve for r (and given that mv = momentum) to give the following equation[math] r =  * v * B [/math][math] cm^3 = \frac{grams CH_{2}}{cm^3} * \frac{mol}{gram} * {N[A]}[/math]