{HEAD ~ The second relationship} developed by {TAIL ~ Weinreich} as described in Ultrasonic Attenuation by Free Carriers in Germanium Physical Review, 107, page 317 results in an electric field proportional to the acoustic energy lost to the free charge carriers 
{ HEAD ~ The second relationship } developed by { TAIL ~ Weinreich } as described in Ultrasonic Attenuation by Free Carriers in Germanium Physical Review , 107 , page 317 results in an electric field proportional to the acoustic energy lost to the free charge carriers
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