The Roos chamber 30 332, a development from Dr. Roos of PTB-Braunschweig, is used as a standard chamber for electron dosimetry. This chamber has a very wide guard ring to exclude any perturbation effect, even at low electron energies. The polarity effect is negligible. Energy dependence is only influenced by the stopping power correction, a type dependent correction is not necessary. The chamber is waterproof and vented through the connection cable. Roos includes a 3.5 ft (1.08 m) cable and BNC Triax connector.
Features
Designed as a standard chamber for electron dosimetry
Wide guard ring excludes perturbation effects, even at low electron energies
Negligible polarity effect, < 0.5% at 10 MeV
Energy dependence is only influenced by the stopping power correction, a type dependent correction is not necessary
CompletelyWaterproof
Ideal for use in water phantoms or suitable solid state phantoms
