Measurement of the ionization yield of nuclear recoils in liquid argon using a two-phase detector with electroluminescence gap

A. Bondar, A. Buzulutskov, A. Dolgov, E. Grishnyaev, V. Nosov, V. Oleynikov, S. Polosatkin, L. Shekhtman, E. Shemyakina, A. Sokolov

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11 Citations (Scopus)

Abstract

A measurement of ionization yields in noble-gas liquids is relevant to the energy calibration of nuclear recoil detectors for dark matter search and coherent neutrino-nucleus scattering experiments. In this work we further study the ionization yield of nuclear recoils in liquid Ar, using a two-phase detector with an electroluminescence gap and DD neutron generator. The ionization yields of nuclear recoils in liquid Ar were measured at 233 keV and electric fields of 0.56 and 0.62 kV/cm; their values amounted to 5.9 ± 0.8 and 7.4 ± 1 e-/keV, respectively. The characteristic dependences of the ionization yield on energy and electric field were determined, while comparing the results obtained to those at lower energies and higher fields.

Original languageEnglish
Article numberC05010
Number of pages10
JournalJournal of Instrumentation
Volume12
Issue number5
DOIs
Publication statusPublished - 23 May 2017

Keywords

  • Charge transport, multiplication and electroluminescence in rare gases and liquids
  • Dark Matter detectors (WIMPs, axions, etc.)
  • Noble liquid detectors (scintillation, ionization, double-phase)
  • RECOMBINATION
  • XENON

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