Effect of wire eccentricity on the performance of cylindrical proportional counters.
A theoretical and experimental investigation of the influence of eccentricity of the multiplication wire on the performance of cylindrical proportional counters is presented. The electric field in the counter is calculated by the method of images, and the Townsend formalism is used to derive the gas gain. The experimental determination of detector performance is carried out with 37Ar. The dependence of the gas gain and of the counter resolution on eccentricity is discussed, and it is shown that eccentricities up to 0.2 are of no concern in microdosimetric measurements with cylindrical proportional counters.
Anachkova
E
E
Strahlenbiologisches Institut der Universitaet Muenchen, Schillerstrasse, Muenchen, Germany.
Roos
H
H
Nekolla
E
E
Kellerer
A M
AM
D011874:Radiometry / Q000295:instrumentation*