Photon emission and atomic collision processes in two-phase argon doped with xenon and nitrogen

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Photon emission and atomic collision processes in two-phase argon doped with xenon and nitrogen. / Buzulutskov, A.

In: Europhysics Letters, Vol. 117, No. 3, 39002, 01.02.2017.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{a5b60588e406478da380368bff411f7b,

title = "Photon emission and atomic collision processes in two-phase argon doped with xenon and nitrogen",

abstract = "We present a comprehensive analysis of photon emission and atomic collision processes in two-phase argon doped with xenon and nitrogen. The dopants are aimed to convert the VUV emission of pure Ar to the UV emission of the Xe dopant in the liquid phase and to the near UV emission of the N2 dopant in the gas phase. Such a mixture is relevant to two-phase dark-matter and low-energy neutrino detectors, with enhanced photon collection efficiency for primary- and secondary-scintillation signals. Based on this analysis, we show that the recently proposed hypothesis of the enhancement of the excitation transfer from Ar to N2 species in the two-phase mode is either incorrect or needs assumptions about a new extreme mechanism coming into force at lower temperatures, in particular that of the resonant excitation transfer via the ArN2 compound (van der Waals molecule).",

keywords = "PROPORTIONAL SCINTILLATION-COUNTER, DARK-MATTER EXPERIMENT, DER-WAALS MOLECULES, LIQUID RARE-GASES, ENERGY-TRANSFER, INFRARED SCINTILLATION, VACUUM-ULTRAVIOLET, TIME-DEPENDENCE, SOLID ARGON, AR-KR",

author = "A. Buzulutskov",

note = "Publisher Copyright: {\textcopyright} CopyrightEPLA, 2017.",

year = "2017",

month = feb,

day = "1",

doi = "10.1209/0295-5075/117/39002",

language = "English",

volume = "117",

journal = "Europhysics Letters",

issn = "0295-5075",

publisher = "IOP Publishing Ltd.",

number = "3",

}

RIS

TY - JOUR

T1 - Photon emission and atomic collision processes in two-phase argon doped with xenon and nitrogen

AU - Buzulutskov, A.

N1 - Publisher Copyright: © CopyrightEPLA, 2017.

PY - 2017/2/1

Y1 - 2017/2/1

N2 - We present a comprehensive analysis of photon emission and atomic collision processes in two-phase argon doped with xenon and nitrogen. The dopants are aimed to convert the VUV emission of pure Ar to the UV emission of the Xe dopant in the liquid phase and to the near UV emission of the N2 dopant in the gas phase. Such a mixture is relevant to two-phase dark-matter and low-energy neutrino detectors, with enhanced photon collection efficiency for primary- and secondary-scintillation signals. Based on this analysis, we show that the recently proposed hypothesis of the enhancement of the excitation transfer from Ar to N2 species in the two-phase mode is either incorrect or needs assumptions about a new extreme mechanism coming into force at lower temperatures, in particular that of the resonant excitation transfer via the ArN2 compound (van der Waals molecule).

AB - We present a comprehensive analysis of photon emission and atomic collision processes in two-phase argon doped with xenon and nitrogen. The dopants are aimed to convert the VUV emission of pure Ar to the UV emission of the Xe dopant in the liquid phase and to the near UV emission of the N2 dopant in the gas phase. Such a mixture is relevant to two-phase dark-matter and low-energy neutrino detectors, with enhanced photon collection efficiency for primary- and secondary-scintillation signals. Based on this analysis, we show that the recently proposed hypothesis of the enhancement of the excitation transfer from Ar to N2 species in the two-phase mode is either incorrect or needs assumptions about a new extreme mechanism coming into force at lower temperatures, in particular that of the resonant excitation transfer via the ArN2 compound (van der Waals molecule).

KW - PROPORTIONAL SCINTILLATION-COUNTER

KW - DARK-MATTER EXPERIMENT

KW - DER-WAALS MOLECULES

KW - LIQUID RARE-GASES

KW - ENERGY-TRANSFER

KW - INFRARED SCINTILLATION

KW - VACUUM-ULTRAVIOLET

KW - TIME-DEPENDENCE

KW - SOLID ARGON

KW - AR-KR

UR - http://www.scopus.com/inward/record.url?scp=85016613169&partnerID=8YFLogxK

U2 - 10.1209/0295-5075/117/39002

DO - 10.1209/0295-5075/117/39002

M3 - Article

AN - SCOPUS:85016613169

VL - 117

JO - Europhysics Letters

JF - Europhysics Letters

SN - 0295-5075

IS - 3

M1 - 39002

ER -

ID: 9078447