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Journal of Low Temperature Physics

, Volume 176, Issue 5–6, pp 802–807 | Cite as

\(\hbox {H}^{-}\) -Like Centers and Space-Charge Effects in Cryogenic Germanium Detectors for Dark Matter Search

  • A. Broniatowski
  • M.-C. Piro
  • S. Marnieros
  • L. Dumoulin
  • E. Olivieri
Article
  • 54 Downloads

Abstract

Space-charge build-up phenomena are investigated in germanium detectors for dark matter search, associated with the thermal emission of carriers by the H\(^{-}\)-like, dopant-related A\(^{+ }\)and D\(^{-}\) shallow trap centers. Evidence for such processes follows from a combined study of the time evolution of the pattern of charge sharing between the different collection electrodes of the device, and of the kinetics of carrier emission by the A\(^{+ }\)and D\(^{- }\)centers. Implications for detector physics are discussed.

Keywords

Dark matter Cryogenic germanium detector Space-charge effects Thermally-stimulated current spectroscopy 

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Copyright information

© Springer Science+Business Media New York 2014

Authors and Affiliations

  • A. Broniatowski
    • 1
  • M.-C. Piro
    • 1
    • 2
  • S. Marnieros
    • 1
  • L. Dumoulin
    • 1
  • E. Olivieri
    • 1
  1. 1.Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM)IN2P3/CNRS et Université Paris XIOrsayFrance
  2. 2.CEA-SaclayGif-sur-YvetteFrance

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