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Title: Angular dependence of columnar recombination in high pressure xenon gas using time profiles of scintillation emission
Authors: Nakamura, K.D.
Ban, S.
Hirose, M.
Ichikawa, A.K.
Ishiyama, Y.
Minamino, A.
Miuchi, K.
Nakaya, T.
Sekiya, H.
Tanaka, S.
Ueshima, K.
Author's alias: 市川, 温子
Keywords: Dark Matter detectors (WIMPs, axions, etc.)
Gaseous detectors
Noble liquid detectors (scintillation, ionization, double-phase)
Time projection Chambers (TPC)
Issue Date: Jul-2018
Publisher: IOP Publishing
Journal title: Journal of Instrumentation
Volume: 13
Thesis number: P07015
Abstract: The angular dependence of columnar recombination in xenon (Xe) gas, if observed for low energy nuclear tracks, can be used for a direction-sensitive dark matter search. We measured both scintillation and ionization yields to study columnar recombination for 5.4 MeV alpha particles in a high pressure gas detector filled with Xe gas at a pressure of 8 atm. Because the recombination photons are emitted several microseconds after de-excitation, the scintillation photons are separated into fast and slow components. While the fast component is not dependent on the track angle relative to the drift electric field, the slow component increases when the track is aligned with the electric field. This result indicates that the track angle relative to the electric field can be reconstructed from the scintillation time profile.
Rights: © 2018 The Author(s). Published by IOP Publishing Ltd on behalf of Sissa Medialab. Original content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
DOI(Published Version): 10.1088/1748-0221/13/07/P07015
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