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Measurement of the scintillation and ionization response of liquid xenon at MeV energies in the EXO-200 experiment

Publication ,  Journal Article
Anton, G; Badhrees, I; Barbeau, PS; Beck, D; Belov, V; Bhatta, T; Breidenbach, M; Brunner, T; Cao, GF; Cen, WR; Chambers, C; Cleveland, B ...
Published in: Physical Review C
June 1, 2020

Liquid xenon (LXe) is employed in a number of current and future detectors for rare event searches. We use the EXO-200 experimental data to measure the absolute scintillation and ionization yields generated by γ interactions from Th228 (2615 keV), Ra226 (1764 keV), and Co60 (1332 keV and 1173 keV) calibration sources, over a range of electric fields. The W value that defines the recombination-independent energy scale is measured to be 11.5±0.5 (syst.) ±0.1 (stat.) eV. These data are also used to measure the recombination fluctuations in the number of electrons and photons produced by the calibration sources at the MeV scale, which deviate from extrapolations of lower-energy data. Additionally, a semiempirical model for the energy resolution of the detector is developed, which is used to constrain the recombination efficiency, i.e., the fraction of recombined electrons that result in the emission of a detectable photon. Detailed measurements of the absolute charge and light yields for MeV-scale electron recoils are important for predicting the performance of future neutrinoless double β-decay detectors.

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Published In

Physical Review C

DOI

EISSN

2469-9993

ISSN

2469-9985

Publication Date

June 1, 2020

Volume

101

Issue

6

Related Subject Headings

  • 5106 Nuclear and plasma physics
 

Citation

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Anton, G., Badhrees, I., Barbeau, P. S., Beck, D., Belov, V., Bhatta, T., … Zeldovich, O. Y. (2020). Measurement of the scintillation and ionization response of liquid xenon at MeV energies in the EXO-200 experiment. Physical Review C, 101(6). https://doi.org/10.1103/PhysRevC.101.065501
Anton, G., I. Badhrees, P. S. Barbeau, D. Beck, V. Belov, T. Bhatta, M. Breidenbach, et al. “Measurement of the scintillation and ionization response of liquid xenon at MeV energies in the EXO-200 experiment.” Physical Review C 101, no. 6 (June 1, 2020). https://doi.org/10.1103/PhysRevC.101.065501.
Anton G, Badhrees I, Barbeau PS, Beck D, Belov V, Bhatta T, et al. Measurement of the scintillation and ionization response of liquid xenon at MeV energies in the EXO-200 experiment. Physical Review C. 2020 Jun 1;101(6).
Anton, G., et al. “Measurement of the scintillation and ionization response of liquid xenon at MeV energies in the EXO-200 experiment.” Physical Review C, vol. 101, no. 6, June 2020. Scopus, doi:10.1103/PhysRevC.101.065501.
Anton G, Badhrees I, Barbeau PS, Beck D, Belov V, Bhatta T, Breidenbach M, Brunner T, Cao GF, Cen WR, Chambers C, Cleveland B, Coon M, Craycraft A, Daniels T, Darroch L, Daugherty SJ, Davis J, Delaquis S, Der Mesrobian-Kabakian A, Devoe R, Dilling J, Dolgolenko A, Dolinski MJ, Echevers J, Fairbank J, Fairbank D, Farine J, Feyzbakhsh S, Fierlinger P, Fudenberg D, Gautam P, Gornea R, Gratta G, Hall C, Hansen EV, Hoessl J, Hufschmidt P, Hughes M, Iverson A, Jamil A, Jessiman C, Jewell MJ, Johnson A, Karelin A, Kaufman LJ, Koffas T, Krücken R, Kuchenkov A, Kumar KS, Lan Y, Larson A, Lenardo BG, Leonard DS, Li GS, Li S, Li Z, Licciardi C, Lin YH, Maclellan R, Mcelroy T, Michel T, Mong B, Moore DC, Murray K, Neilson R, Njoya O, Nusair O, Odian A, Ostrovskiy I, Piepke A, Pocar A, Retière F, Robinson AL, Rowson PC, Runge J, Schmidt S, Sinclair D, Soma AK, Stekhanov V, Tarka M, Todd J, Tolba T, Tosi D, Totev TI, Veenstra B, Veeraraghavan V, Vuilleumier JL, Wagenpfeil M, Watkins J, Weber M, Wen LJ, Wichoski U, Wrede G, Wu SX, Xia Q, Yahne DR, Yang L, Yen YR, Zeldovich OY. Measurement of the scintillation and ionization response of liquid xenon at MeV energies in the EXO-200 experiment. Physical Review C. 2020 Jun 1;101(6).

Published In

Physical Review C

DOI

EISSN

2469-9993

ISSN

2469-9985

Publication Date

June 1, 2020

Volume

101

Issue

6

Related Subject Headings

  • 5106 Nuclear and plasma physics