Impact of charge trapping on the energy resolution of Ge detectors for rare-event physics searches

  title={Impact of charge trapping on the energy resolution of Ge detectors for rare-event physics searches},
  author={Dongming Mei and Rao Mukund and W.-Z. Wei and Rajendra Panth and Jia-Chu Liu and Hao Mei and Y.-Y. Li and Pramod Acharya and Sanjay Bhattarai and Kyler Kooi and Mathbar Raut and X.-S. Sun and Alex Kirkvold and K.-M. Dong and X.-H. Meng and G.-J. Wang and G. Yang},
  journal={arXiv: Instrumentation and Detectors},
Charge trapping degrades the energy resolution of germanium (Ge) detectors, which require to have increased experimental sensitivity in searching for dark matter and neutrinoless double-beta decay. We investigate the charge trapping processes utilizing nine planar detectors fabricated from USD-grown crystals with well-known net impurity levels. The charge collection efficiency as a function of charge trapping length is derived from the Shockley-Ramo theorem. Furthermore, we develop a model that… Expand
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