Liquid Hole Multipliers: Bubble-assisted electroluminescence in liquid xenon

L. Arazi, E. Erdal, A. E.C. Coimbra, M. L. Rappaport, D. Vartsky, V. Chepel, A. Breskin

Research output: Contribution to journalArticlepeer-review

24 Scopus citations


In this work we discuss the mechanism behind the large electroluminescence signals observed at relatively low electric fields in the holes of a Thick Gas Electron Multiplier (THGEM) electrode immersed in liquid xenon. We present strong evidence that the scintillation light is generated in xenon bubbles trapped below the THGEM holes. The process is shown to be remarkably stable over months of operation, providing - under specific thermodynamic conditions - energy resolution similar to that of present dual-phase liquid xenon experiments. The observed mechanism may serve as the basis for the development of Liquid Hole Multipliers (LHMs), capable of producing local charge-induced electroluminescence signals in large-volume single-phase noble-liquid detectors for dark matter and neutrino physics experiments.

Original languageEnglish
Article numberP08015
JournalJournal of Instrumentation
Issue number8
StatePublished - 1 Aug 2015
Externally publishedYes


  • Charge transport
  • double-phase); Micropattern gaseous detectors
  • ionization
  • multiplication and electroluminescence in rare gases and liquids; Noble liquid detectors (scintillation

ASJC Scopus subject areas

  • Mathematical Physics
  • Instrumentation


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