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Unformatted text preview: d impurity in a scattering event. d) The maximum distance between the carrier and the ionized impurity in a scattering event. e) The radius of the ionized impurity . 2) What is main difference between the Brooks ­Herring (BH) and Conwell ­Weisskopf (CW) treatments of II scattering? a) BH assumes a screened Coulomb potential and CW an unscreened Coulomb potential. b) BH uses Fermi’s Golden Rule to compute the transition rate, and CW does not. c) CW uses...
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This document was uploaded on 01/15/2014.

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