Function of bias resistor in semiconductor detector

[Lojius]

Hi,
I am working on CdZnTe detector. Can anyone please explain the function of bias resistor in radiation detector setup & how to select an appropriate bias resistor?

 

[Astronuc]

See page 61 and following here - http://www-physics.lbl.gov/~spieler/NSS_short-course/NSS02_Pulse_Processing.pdf

Detector bias voltage is applied through the resistor, R_B.

See a table including bias voltages here - http://www.eurorad.com/detectors.php