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Title: Low-energy (<10keV) electron ionization and recombination model for a liquid argon detector

Detailed understanding of the ionization process in dual-phase noble element detectors is important for their use in applications such as the search for Dark Matter and coherent neutrino-nucleus scattering. The response of dual-phase noble element detectors to low-energy ionization events is poorly understood at this time. We describe a new simulation tool which predicts the ionization yield from electronic energy deposits (E < 10 keV) in liquid Ar, including the dependence of the yield on the applied electric drift eld. The ionization signal produced in a dual-phase argon detector from 37Ar beta decay and 55Fe X-rays has been calculated using the new model.
 [1] ;  [2] ;  [3] ;  [2] ;  [2] ;  [2] ;  [2] ;  [2] ;  [2]
  1. Pennsylvania State Univ., University Park, PA (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
  2. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  3. Pennsylvania State Univ., University Park, PA (United States)
Publication Date:
OSTI Identifier:
Report Number(s):
Journal ID: ISSN 0168-9002; NN2003000
DOE Contract Number:
Resource Type:
Journal Article
Resource Relation:
Journal Name: Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment; Journal Volume: 771; Journal Issue: C
Research Org:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
Sponsoring Org:
Country of Publication:
United States
Low-Energy Ionization; Liquid Argon; Dark Matter; Dual-phase noble element detectors