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Question documentation about multiple scattering 

Forum: Fast Simulation, Transportation & Others
Date: 03 Jun, 2016
From: Anthony LaTorre <Anthony LaTorre>

In section 6.1.4 of the Physics Reference Manual it talks about how the angular distribution after multiple scattering is calculated. It introduces a model parameter \mu_0 but doesn't clearly explain what it is.

Does \mu_0 represent a hard cutoff for the functions g_1 and g_2, i.e.

g_1(u) = C_1 exp(-a*(1-u)) if u >= u_0 *otherwise* 0
g_2(u) = c_2 1/(b-u)**2    if u <= u_0 *otherwise* 0


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