Title :
Numerical simulation of the space charge effect on the Multi-channel ionization chamber time response signal
Author :
Nasr, Alexis ; Schenk, H.W. ; Walenta, A.H.
Author_Institution :
Phys. Dept., Univ. of Siegen, Siegen, Germany
fDate :
Oct. 27 2012-Nov. 3 2012
Abstract :
In this paper a numerical simulation is developed to study the behavior of the ionization chamber current mode, considering the space charge, diffusion, repulsion and recombination effects when operating the chamber with a high photon intensity delivered by synchrotron radiation. This simulation allowed us to understand the charge dynamics inside the ionization chamber and the output current delivered by the induced charges on the chamber plates at recombination and saturation regimes.
Keywords :
ionisation chambers; numerical analysis; space charge; synchrotron radiation; charge dynamics; diffusion effects; multichannel ionization chamber; numerical simulation; photon intensity; recombination effects; repulsion effects; saturation regimes; space charge effect; synchrotron radiation; time response signal; diffusion; ionization; recombination; repulsion; space charge; synchrotron radiation;
Conference_Titel :
Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC), 2012 IEEE
Conference_Location :
Anaheim, CA
Print_ISBN :
978-1-4673-2028-3
DOI :
10.1109/NSSMIC.2012.6551153
