Research output: Contribution to journal › Article › peer-review
First observation of neutral bremsstrahlung electroluminescence in liquid argon. / Бондарь, Александр Евгеньевич; Buzulutskov, A.; Frolov, E. et al.
In: Physical Review Letters, Vol. 131, No. 24, 241001, 15.12.2023.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - First observation of neutral bremsstrahlung electroluminescence in liquid argon
AU - Бондарь, Александр Евгеньевич
AU - Buzulutskov, A.
AU - Frolov, E.
AU - Borisova, E.
AU - Nosov, V.
AU - Oleynikov, V.
AU - Sokolov, A.
N1 - This work was supported in part by Russian Science Foundation (Project No. 20-12-00008 ).
PY - 2023/12/15
Y1 - 2023/12/15
N2 - Recent discovery of additional mechanism of electroluminescence (EL) in noble gases due to neutral bremsstrahlung (NBrS) effect led to a prediction that NBrS EL should be present in noble liquids as well. A rigorous theory of NBrS EL in noble liquids was developed accordingly in the framework of Cohen-Lekner and Atrazhev approach. In this work, we confirm this prediction: for the first time, visible-range EL has been observed in liquid Ar at electric fields reaching 90~kV/cm, using Gas Electron Multiplier (GEM) and Thick GEM (THGEM) structures. Absolute light yields of the EL were measured and found to be in excellent agreement with the theory, provided that momentum-transfer cross section of electron-atom scattering (instead of energy-transfer one) is used for calculation of NBrS cross section.
AB - Recent discovery of additional mechanism of electroluminescence (EL) in noble gases due to neutral bremsstrahlung (NBrS) effect led to a prediction that NBrS EL should be present in noble liquids as well. A rigorous theory of NBrS EL in noble liquids was developed accordingly in the framework of Cohen-Lekner and Atrazhev approach. In this work, we confirm this prediction: for the first time, visible-range EL has been observed in liquid Ar at electric fields reaching 90~kV/cm, using Gas Electron Multiplier (GEM) and Thick GEM (THGEM) structures. Absolute light yields of the EL were measured and found to be in excellent agreement with the theory, provided that momentum-transfer cross section of electron-atom scattering (instead of energy-transfer one) is used for calculation of NBrS cross section.
UR - https://www.scopus.com/record/display.uri?eid=2-s2.0-85179621454&origin=inward&txGid=d78e170e73d2921f54f370283378ea5c
UR - http://arxiv.org/abs/2305.08084
UR - https://www.mendeley.com/catalogue/763461fa-7760-32a8-a67f-54894bc27dae/
U2 - 10.1103/PhysRevLett.131.241001
DO - 10.1103/PhysRevLett.131.241001
M3 - Article
C2 - 38181145
VL - 131
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 24
M1 - 241001
ER -
ID: 59391560