Effect of ionization density on the time dependence of luminescence from liquid argon and xenon

Hitachi, A.; Takahashi, T.; Funayama, Nobutaka; Masuda, K.; Kikuchi, Jun; Doke, T.

doi:10.1103/physrevb.27.5279

Cited by 287 publications

(390 citation statements)

References 27 publications

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“…They do not depend on energy or quality of particles, and are practically the same for the liquid [26,33] and the solid [34]. The intensity ratio of singlet and triplet excited states, S/T ratio, changes as LET changes.…”

Section: Scintillation Decay Shapesmentioning

confidence: 75%

“…However, the lifetimes of the vuv emission do not depend on LET or the existence of quenching [26]. This fact suggests that quenching occurs prior to self-trapping.…”

Section: Electronic Quenchingmentioning

confidence: 84%

“…The scintillation decay [26,33] due to heavy ions shows components that originate from the self-trapped exciton states (excimers). The recombination in the heavy particle track core occurs very fast and does not affect the decay shape.…”

Section: Scintillation Decay Shapesmentioning

confidence: 99%

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Properties of liquid xenon scintillation for dark matter searches

Hitachi

2005

Astroparticle Physics

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The scintillation yields and decay shapes for recoil Xe ions produced by WIMPs in liquid xenon have been examined. A quenching model based on a biexcitonic diffusion-reaction mechanism is proposed for electronic quenching. The total predicted quenching, nuclear and electronic, is compared with experimental results reported for nuclear recoils from neutrons. Model calculations give the average energy to produce a vuv photon, W ph , to be ~75 eV for 60 keV recoil Xe ions. Some aspects of ionization relating to liquid xenon WIMP detectors are also discussed.

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Section: Scintillation Decay Shapesmentioning

confidence: 75%

“…However, the lifetimes of the vuv emission do not depend on LET or the existence of quenching [26]. This fact suggests that quenching occurs prior to self-trapping.…”

Section: Electronic Quenchingmentioning

confidence: 84%

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Properties of liquid xenon scintillation for dark matter searches

Hitachi

2005

Astroparticle Physics

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“…The VUV luminescence is produced by the decay of singlet and triplet states of the Xe * 2 excimer. These can be formed directly by excited atoms left by the interacting particle or as a result of recombination into an excited state along the particle track [13,17]. Figure 3 shows MCA spectra taken from one PMT.…”

Section: Cooling System Pmt Array and Scintillator Outputmentioning

confidence: 99%

The ZEPLIN III Detector; Results from Surface Calibrations

Sumner

Akimov

Alner

et al. 2007

Nuclear Physics B - Proceedings Supplements

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ZEPLIN-III is a direct dark-matter search instrument using liquid xenon as a target. Both the scintillation light and the ionisation charge are measured. The instrument has been built and it is currently being testing in a surface laboratory. We present results from some of the initial testing, including design thermal control system verification, photomultiplier calibration (including spectral measurements with 60 keV photons from 241 Am) and two-phase operation showing simultaneous measurement of scintillation and charge and position reconstruction.

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“…The LXe VUV luminescence is produced by the decay of singlet and triplet states of the Xe Ã 2 excimer. These can be excited directly by the interacting particle or as a result of recombination along the par- 24,25]. Recombination is very efficient for nuclear recoil interactions, and so their scintillation is faster (s ' 21 ns in a single-exponential approximation) than for electrons (s [ 45 ns, depending on energy) [24,26].…”

Section: The Primary Signalmentioning

confidence: 99%

The ZEPLIN-III dark matter detector: Performance study using an end-to-end simulation tool

Araújo

Akimov

Alner

et al. 2006

Astroparticle Physics

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We present results from a GEANT4-based Monte Carlo tool for end-to-end simulations of the ZEPLIN-III dark matter experiment. ZEPLIN-III is a two-phase detector which measures both the scintillation light and the ionisation charge generated in liquid xenon by interacting particles and radiation. The software models the instrument response to radioactive backgrounds and calibration sources, including the generation, ray-tracing and detection of the primary and secondary scintillations in liquid and gaseous xenon, and subsequent processing by data acquisition electronics. A flexible user interface allows easy modification of detector parameters at run time. Realistic datasets can be produced to help with data analysis, an example of which is the position reconstruction algorithm developed from simulated data. We present a range of simulation results confirming the original design sensitivity of a few times 10 À8 pb to the WIMP-nucleon cross-section.

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Effect of ionization density on the time dependence of luminescence from liquid argon and xenon

Cited by 287 publications

References 27 publications

Properties of liquid xenon scintillation for dark matter searches

Properties of liquid xenon scintillation for dark matter searches

The ZEPLIN III Detector; Results from Surface Calibrations

The ZEPLIN-III dark matter detector: Performance study using an end-to-end simulation tool

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