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. Author manuscript; available in PMC: 2016 Apr 21.
Published in final edited form as: Phys Med Biol. 2015 Mar 24;60(8):R155–R209. doi: 10.1088/0031-9155/60/8/R155

Figure 5.

Figure 5

Schematic diagram showing the trajectory of a proton undergoing multiple Coulomb scattering events. θ is the root mean square (rms) space scattering angle and θx is the projected rms scattering angle. (Leo, 1994)