TY - JOUR
T1 - Measurement of emission spectrum for gaseous argon electroluminescence in visible light region from 300 to 600 nm
AU - Aoyama, Kazutaka
AU - Kimura, Masato
AU - Morohoshi, Hiroyuki
AU - Takeda, Tomomasa
AU - Tanaka, Masashi
AU - Yorita, Kohei
N1 - Funding Information:
This work is part of the research performed under the Waseda University Research Institute for Science and Engineering (project number 2016A-507/2020N-006), supported by JSPS Grant-in-Aid for Scientific Research on Innovative Areas, Japan ( 15H01038/17H05204 ), Grant-in-Aid for Scientific Research(B), Japan ( 18H01234 ), and Grant-in-Aid for JSPS Research Fellow, Japan ( 20J20839 ). The authors acknowledge the support of the Institute for Advanced Theoretical and Experimental Physics, Waseda University, Japan .
Publisher Copyright:
© 2021 Elsevier B.V.
PY - 2022/2/11
Y1 - 2022/2/11
N2 - A double-phase Ar detector can efficiently identify particles and reconstruct their positions. However, the properties of electroluminescence (EL) for secondary light emission in the gas phase are not fully understood. Earlier studies have explained the EL process using an ordinary EL mechanism because of an Ar excimer; however, this mechanism does not predict the emission of visible light (VL). Recent measurements have demonstrated VL components in Ar gas EL, to explain which a new mechanism called neutral bremsstrahlung (NBrS) was proposed. In this study, we investigated gaseous Ar EL in the VL region from 300 to 600 nm at room temperature and normal pressure using a gaseous time projection chamber (TPC). The secondary emission light from the TPC luminescence region was dispersed using a spectrometer. The observed spectrum was interpreted using the ordinary EL and NBrS models, and the effect of nitrogen impurities is discussed herein.
AB - A double-phase Ar detector can efficiently identify particles and reconstruct their positions. However, the properties of electroluminescence (EL) for secondary light emission in the gas phase are not fully understood. Earlier studies have explained the EL process using an ordinary EL mechanism because of an Ar excimer; however, this mechanism does not predict the emission of visible light (VL). Recent measurements have demonstrated VL components in Ar gas EL, to explain which a new mechanism called neutral bremsstrahlung (NBrS) was proposed. In this study, we investigated gaseous Ar EL in the VL region from 300 to 600 nm at room temperature and normal pressure using a gaseous time projection chamber (TPC). The secondary emission light from the TPC luminescence region was dispersed using a spectrometer. The observed spectrum was interpreted using the ordinary EL and NBrS models, and the effect of nitrogen impurities is discussed herein.
KW - Dark matter detectors
KW - Liquid argon detectors
KW - Neutral bremsstrahlung
KW - Proportional electroluminescence
UR - http://www.scopus.com/inward/record.url?scp=85121971054&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85121971054&partnerID=8YFLogxK
U2 - 10.1016/j.nima.2021.166107
DO - 10.1016/j.nima.2021.166107
M3 - Article
AN - SCOPUS:85121971054
SN - 0168-9002
VL - 1025
JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
M1 - 166107
ER -