Light Pulse Shapes in Liquid Scintillators Originating From Gamma-Rays and Neutrons

Szczęśniak, T.; Moszyński, M.; Syntfeld-Każuch, A.; Świderski, Ł.; Wolski, D.; Grodzicka, M.; Pausch, G.; Stein, J.; Kniest, F.; Kusner, M.R.; Schotanus, P.; Hurlbut, C.R.

doi:10.1109/tns.2010.2068311

Cited by 30 publications

(22 citation statements)

References 8 publications

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“…VI, the present system displays the usual excellent NR/ER separation characteristic of EJ-301 ( Fig. 9, [92,104,118]).…”

Section: Calibrations and Expected Backgroundssupporting

confidence: 59%

“…An initial calibration using the 59.9 keV gamma emission from 241 Am was used to establish an energy scale for the response to ERs. Good agreement was obtained with the 2.5 PE/keVee yield in [92], once the modest non-proportionality of this scintillator [116] is included in the comparison (the notation "ee" or "nr" is used to denote "electron equivalent" and "nuclear recoil" in what follows). This same photoelectron yield can be calculated from the scintillation photon yield for EJ-301 (12,000 ph/MeVee [87]) and the quantum efficiency of ET9390KB PMTs integrated over the wavelengths of EJ-301 emission, indicating an excellent light collection efficiency for these cells.…”

Section: Calibrations and Expected Backgroundsmentioning

confidence: 71%

“…Specifically for EJ-301, these components have decay constants of 5 ns (fast), 32 ns (medium), and ∼140 ns (long). ERs populate these channels in a 89:7:3 proportionality ratio, which becomes 56:25:19 for NRs [92]. This PSD capability has been extensively characterized and exploited over the past few decades, but at energies larger than those of interest for a low-mass SIMP search.…”

Section: Methodsmentioning

confidence: 99%

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Search for a nonrelativistic component in the spectrum of cosmic rays at Earth

Collar

2018

Phys. Rev. D

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Dark matter particles gravitationally bound to our galaxy should exhibit a characteristic speed distribution limited by their escape velocity at the position of the Earth (vesc 550 km/s). An ongoing search for anomalous cosmic rays at Earth, kinematically similar to cold dark matter, is described. The technique can discriminate between these and known slow-moving particles such as neutrons, would be sensitive to telltale signatures from presently unexplored candidates, and offers the possibility of identifying the mediating type of interaction (nuclear vs. electron recoils). Studies of background identification and abatement in a shallow underground site are presented. The expected reach of the method is discussed, and illustrated by obtaining the first limits for dark matter particles lighter than 100 MeV/c 2 interacting via nuclear recoils. PACS numbers: 95.35.+d, 96.50.Zc, 29.40.Mc

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“…VI, the present system displays the usual excellent NR/ER separation characteristic of EJ-301 ( Fig. 9, [92,104,118]).…”

Section: Calibrations and Expected Backgroundssupporting

confidence: 59%

Section: Calibrations and Expected Backgroundsmentioning

confidence: 71%

Section: Methodsmentioning

confidence: 99%

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Search for a nonrelativistic component in the spectrum of cosmic rays at Earth

Collar

2018

Phys. Rev. D

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“…The possibility of obtaining discriminated signals from thermal neutrons, fast neutrons and gamma-rays has been demonstrated in a number of studies conducted with 10 B-loaded liquid scintillators that, until recently, have been the only PSD materials suitable for 10 B incorporation [9][10][11][12]. Fewer PSD studies have been reported for 6 Li-loaded organic scintillators [13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Pulse shape discrimination with lithium-containing organic scintillators

Zaitseva

Glenn

Martínez

et al. 2013

Nuclear Instruments and Methods in Physics Research Section A:

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“…1 Unfortunately, rational design of new PSD scintillators is very difficult because performance-limiting phenomena, such as pulse pileup and afterglow, are controlled by complex mechanisms that govern the triplet annihilation kinetics. 2 Our new approach to particle detection is enabled by doping organic scintillators with organometallic complexes to create hybrid materials that emit light of various colors when they interact with high-energy particles. Known as spectral-shape discrimination (SSD), this method enables neutrons to be distinguished from ubiquitous background gamma rays based on the ratio of emitted light at two different wavelengths.…”

mentioning

confidence: 99%