Measurement of the scintillation efficiency for nuclear recoils in liquid argon under electric fields up to 3 kV/cm

M. Kimura, Masashi Tanaka, T. Washimi, Kohei Yorita

Research output: Contribution to journalArticle

Abstract

We present a measurement of scintillation efficiency for a few tens of keV nuclear recoils (NR) with a liquid argon time projection chamber under electric fields ranging from 0 to 3 kV/cm. The calibration data are taken with Cf252 radioactive source. Observed scintillation and electroluminescence spectra are simultaneously fit with spectra derived from Geant4-based Monte Carlo simulation and an NR model. The scintillation efficiency extracted from the fit is reported as a function of recoil energy and electric field. This result can be used for designing the detector and for the interpretation of experimental data in searching for scintillation and ionization signals induced by WIMP dark matter.

Original languageEnglish
Article number032002
JournalPhysical Review D
Volume100
Issue number3
DOIs
Publication statusPublished - 2019 Aug 1

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scintillation
argon
electric fields
liquids
weakly interacting massive particles
electroluminescence
dark matter
chambers
projection
ionization
detectors
simulation
energy

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Measurement of the scintillation efficiency for nuclear recoils in liquid argon under electric fields up to 3 kV/cm. / Kimura, M.; Tanaka, Masashi; Washimi, T.; Yorita, Kohei.

In: Physical Review D, Vol. 100, No. 3, 032002, 01.08.2019.

Research output: Contribution to journalArticle

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