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ishmandoo
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I am having a lot of trouble starting the following problem. Any ideas? Thanks a lot for helping!
Derive from first principles, the diffusion time for particles traveling at speed v in a two dimensional (x,y) space to reach a distance R from their release point if the scatterers have a density n(m^-2) and linear cross section for scatter [tex]\sigma[/tex](m) Let each particle scatter with equal probability into the +/- x, +/-y directions.
I don't know what some of these things mean and they aren't explained well in my book or anywhere i look. What is the density it is referring to? What is the linear cross section for scatter? Again, thanks for any help.
Derive from first principles, the diffusion time for particles traveling at speed v in a two dimensional (x,y) space to reach a distance R from their release point if the scatterers have a density n(m^-2) and linear cross section for scatter [tex]\sigma[/tex](m) Let each particle scatter with equal probability into the +/- x, +/-y directions.
I don't know what some of these things mean and they aren't explained well in my book or anywhere i look. What is the density it is referring to? What is the linear cross section for scatter? Again, thanks for any help.