Published December 14, 1992 | Version v1
Journal article

Simultaneous high resolution meausurement of phonons and ionization created by particle interactions in a 60 g germanium crystal at 25 mK

  • 1. Laboratoire de Physique Corpusculaire, College de France, 75231 Paris (France)
  • 2. Department of Physics, University of British Columbia, 6224 Agricultural Road, Vancouver, British Columbia V6T 1Z1 (Canada)
  • 3. Department d'Astrophysique, de Physique des Particules, de Physique Nucleaire et de l'Instrumentation Associee-Service Physique des Particles Centre I'Etudes Nucleaires de Saclay, 91191 Gif-sur-Yvette, CEDEX (France)
  • 4. Department of Physics, University of California at Santa Barbara, Santa Barbara, California 93106 (United States)
  • 5. Lawrence Berkeley Laboratory, 1 Cyclotron Road, Berkeley, California 94720 (United States)
  • 6. Department of Material Science Mineral Engineering, University of California at Berkeley, Berkeley, California 94720 (United States)
  • 7. Department of Physics, University of California at Berkeley, Berkeley, California 94720 (United States)
  • 8. Center for Particle Astrophysics, University of California at Berkeley, Berkeley, California 94720 (United States)

Description

We demonstrate simultaneous high energy resolution (rms∼800 eV) measurements of ionization and phonons created by particle interactions in a semiconductor crystal of macroscopic size (60 g germanium) at 25 mK. We present first studies of charge collection at biases below 1 V/cm, and find that, contrary to commonly held opinion, the full recoil energy of particle interactions is recovered as phonons when charge trapping is negligible. We also report an unanticipated correlation between charge collection and phonon energy at very low bias, and discuss this effect in terms of charge trapping

Additional details

Publishing Information

Journal Title
Physical Review Letters
Journal Volume
69
Journal Issue
24
Journal Page Range
p. 3531-3534.
ISSN
0031-9007
CODEN
PRLTAO