Scintillation response of liquid Xe surrounded by PTFE reflector for gamma rays

Yamashita, M.; Doke, T.; Kawasaki, Katsuya; Kikuchi, Jun; Suzuki, Satoshi

doi:10.1016/j.nima.2004.06.168

Cited by 64 publications

(70 citation statements)

References 13 publications

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“…The estimated scintillation efficiency q el for 60 keV recoil Xe ions is shown in Fig. 2 in relation with experimental efficiencies reported for various particles as a function of LET [34,[48][49][50][51]. Relativistic heavy ions, 400-650 MeV/n C to Fe ions, show no quenching in liquid Xe and the scintillation efficiency or q was set to unity for those particles.…”

Section: Discussionmentioning

confidence: 84%

“…The escaping electrons can easily be collected by an external electric field and a proper summation of ionization and scintillation signals gives the efficiency of one [16]. Some results for γ-rays are normalized for 1 MeV electrons [49,51]. The values reported for 1.4 MeV/n 50 Ti, 58 Ni and 238 U ions, normalized for α particles, in solid xenon are also shown for comparison [34].…”

Section: Discussionmentioning

confidence: 99%

“…No values are available for the ratio of recoil Xe ions to α particles nor to relativistic heavy ions. The α/β or α/γ ratios reported so far are scattered around 1.00-1.33 [34,[48][49][50][51]. While some researchers reported considerable dependence of scintillation efficiency on the energy for γ-rays, others showed nearly constant.…”

Section: Discussionmentioning

confidence: 99%

“…Solid circles represent efficiencies observed for relativistic heavy ions [24]. Open symbols represent electrons, β and γ-ray (○,∆,□) [34,[48][49][50][51]. Estimated efficiency for 60 keV recoil Xe ions is plotted at the total LET (q TTL ) and electronic LET (q el ).…”

Section: Discussionmentioning

confidence: 99%

See 3 more Smart Citations

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: Discussionmentioning

confidence: 84%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

Properties of liquid xenon scintillation for dark matter searches

Hitachi

2005

Astroparticle Physics

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“…The fourth mesh, in front of the PMT facing the cathode, is used to minimize cross-talk between light and charge signals when detected simultaneously. PTFE material is used as a reflector for the Xe light [19]. To study the electric field dependence of the scintillation produced by electron and nuclear recoils, a uniform electric field is created with appropriate potentials on the meshes.…”

Section: Experimental Apparatus a Liquid Xenon Detectormentioning

confidence: 99%

Scintillation response of liquid xenon to low energy nuclear recoils

et al. 2005

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Liquid Xenon (LXe) is expected to be an excellent target and detector medium to search for dark matter in the form of Weakly Interacting Massive Particles (WIMPs). Knowledge of LXe ionization and scintillation response to low energy nuclear recoils expected from the scattering of WIMPs by Xe nuclei is important for determining the sensitivity of LXe direct detection experiments. Here we report on new measurements of the scintillation yield of Xe recoils with kinetic energy as low as 10 keV. The dependence of the scintillation yield on applied electric field was also measured in the range of 0 to 4 kV/cm. Results are in good agreement with recent theoretical predictions that take into account the effect of biexcitonic collisions in addition to the nuclear quenching effect.

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The XENON Dark Matter Experiment

Aprile

Dark Matter in Astro- And Particle Physics

307

617

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The XENON100 dark matter experiment uses liquid xenon (LXe) in a time projection chamber (TPC) to search for xenon nuclear recoils resulting from the scattering of dark matter Weakly Interacting Massive Particles (WIMPs). In this paper we present a detailed description of the detector design and present performance results, as established during the commissioning phase and during the first science runs. The active target of XENON100 contains 62 kg of LXe, surrounded by an LXe veto of 99 kg, both instrumented with photomultiplier tubes (PMTs) operating inside the liquid or in xenon gas. The LXe target and veto are contained in a low-radioactivity stainless steel vessel, embedded in a passive radiation shield and is installed underground at the Laboratori Nazionali del Gran Sasso (LNGS), Italy. The experiment has recently published results from a 100 live-days dark matter search. The ultimate design goal of XENON100 is to achieve a spin-independent WIMP-nucleon scattering cross section sensitivity of = 2 × 10−45 cm2 for a 100 GeV/c2 WIMP.

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Scintillation response of liquid Xe surrounded by PTFE reflector for gamma rays

Cited by 64 publications

References 13 publications

Properties of liquid xenon scintillation for dark matter searches

Properties of liquid xenon scintillation for dark matter searches

Scintillation response of liquid xenon to low energy nuclear recoils

The XENON Dark Matter Experiment

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