Using digital signal processing to significantly enhance the resolution of cadmium-zinc-telluride detectors

Year
2000
Author(s)
G. Schmid - Lawrence Livermore National Laboratory
Allen Friensehner - Lawrence Liver-more National Laboratory
Steven A. Kreek - Lawrence Liver-more National Laboratory
Judith E. Kammeraadt - Lawrence Liver-more National Laboratory
Dean Beckedahl - Lawrence Liver-more National Laboratory
Jerry J. Blair - Lawrence Liver-more National Laboratory
Yves Dardenne - Lawrence Livermore National Laboratory
Abstract
We are developing a technique to correct for the resolution-degrading ballistic deficit in cadmium-zinc-telluride gamma-ray detectors using our patent-pending pulse-shape analysis methodology. The methodology has already been demonstrated for applications in Compton rejection and possible application to gamma-ray imaging with Ge-based systems. If successful, this approach will yield a truly high-resolution CZT detector without the limitations associated with co-planar grids or other designs. In this paper, we discuss the current project status.