Backscattering
Vital thing...
Tracking down proper ratios, pre70's material uses deflection by an angle greater than 90 as the backscatter definition, this isn't so as pointed out by Stamnes, as the real definition is deflection to an angle greater than 90 - the difference being an electron at a pitch angle of 80 needs to be delfected back by an angle of 10 to an angle of 90 to backscatter.]
Confused? So was every scientist from 1905 who'd been happilly using the other definition...
Protons are strongly foward scattered past 1keV and pretty strongly forward scattered before that (by strongly, I mean trillions of protons to one backscatter) electrons reach the same situation at high energies, but slower, only thousands to one, which means a statistically significant return signal at auroral energies.
Also interesting reading on the two-stream approximation and its astronomical background. This approximation is very similar to the physics behind my model, which is no coincidence as they're both derived from radiative transfer theory.
Most transport models are medically derived. That's weird. Ok, maybe not, but the thought of a transport modeller in a well paid job is...
Time to go
Bye!
Tracking down proper ratios, pre70's material uses deflection by an angle greater than 90 as the backscatter definition, this isn't so as pointed out by Stamnes, as the real definition is deflection to an angle greater than 90 - the difference being an electron at a pitch angle of 80 needs to be delfected back by an angle of 10 to an angle of 90 to backscatter.]
Confused? So was every scientist from 1905 who'd been happilly using the other definition...
Protons are strongly foward scattered past 1keV and pretty strongly forward scattered before that (by strongly, I mean trillions of protons to one backscatter) electrons reach the same situation at high energies, but slower, only thousands to one, which means a statistically significant return signal at auroral energies.
Also interesting reading on the two-stream approximation and its astronomical background. This approximation is very similar to the physics behind my model, which is no coincidence as they're both derived from radiative transfer theory.
Most transport models are medically derived. That's weird. Ok, maybe not, but the thought of a transport modeller in a well paid job is...
Time to go
Bye!
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