Calculating mean free path of electrons in InSb from conductivity and mobility

[IN88]

Hi,

I am wondering how i can calculate the classical mean free path of electrons in InSb given the following material parameters...

zero field conductivity = 1.86e4 1/ohm m
electron mobility = 45,500 cm^2/Vs

Is it a case of working out the scattering time and multiplying it by the fermi velocity? If so how do i go about this?

Thanks

 

[ZapperZ]

Assuming you are using the Drude model, here you go:

http://hyperphysics.phy-astr.gsu.edu/hbase/electric/ohmmic.html

Zz.