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Cross sections
❑
Molière
o
Based on small angle scatter theory by Fermi-Eyges
o
Rutherford cross sections
o
Valid up to app. 30-40 degrees
o
Spin and relativistic effects not accounted for
o
For a randomly selected path length one gets the deflection angle
o
Path length at least 100 elastic collisions
❑
Goudsmith-Saunderson
o
No restrictions on scattering angle
o
Spin and relativistic effects are included
o
Separates electrons and positrons
o
This theory is more accurate down to a few collisions (contrary to
Molière)
o
Must be pre-determined for certain fixed steps to be efficient
Dublin 2018
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