A. Burenkov
A5055777862- Dark Matter and Cosmic Phenomena
- Atomic and Subatomic Physics Research
- Advancements in Semiconductor Devices and Circuit Design
- Radiation Detection and Scintillator Technologies
- Neutrino Physics Research
- Semiconductor materials and devices
- Particle physics theoretical and experimental studies
- Particle Detector Development and Performance
- Silicon Carbide Semiconductor Technologies
- Integrated Circuits and Semiconductor Failure Analysis
- Nuclear Physics and Applications
- Silicon and Solar Cell Technologies
- Quantum, superfluid, helium dynamics
- Astrophysics and Cosmic Phenomena
- Nanowire Synthesis and Applications
- Radiation Therapy and Dosimetry
- Calibration and Measurement Techniques
- Spectroscopy and Laser Applications
- Thermal properties of materials
- Advancements in Photolithography Techniques
- Nuclear physics research studies
- VLSI and Analog Circuit Testing
- Quantum and electron transport phenomena
- Atmospheric Ozone and Climate
- Ga2O3 and related materials
Schott (Germany)
2004-2022
Fraunhofer Institute for Integrated Systems and Device Technology
2009-2022
All-Russian Scientific Research Institute of Technical Physics
2019
Kurchatov Institute
2014-2018
Institute for Theoretical and Experimental Physics
2009-2018
Moscow Engineering Physics Institute
2013-2018
Fraunhofer Society
2002-2014
University of Coimbra
2012
Institute on Taxation and Economic Policy
2010
Fraunhofer Institute for Integrated Circuits
1997-2000
We report on a search for neutrinoless double-beta decay of $^{136}$Xe with EXO-200. No signal is observed an exposure 32.5 kg-yr, background ~1.5 x 10^{-3} /(kg yr keV) in the $\pm 1\sigma$ region interest. This sets lower limit half-life $T_{1/2}^{0\nu\beta\beta}$($^{136}$Xe) > 1.6 10$^{25}$ (90% CL), corresponding to effective Majorana masses less than 140-380 meV, depending matrix element calculation.
We report the observation of two-neutrino double-beta decay in Xe-136 with T_1/2 = 2.11 +- 0.04 (stat.) 0.21 (sys.) x 10^21 yr. This second order process, predicted by Standard Model, has been observed for several nuclei but not Xe-136. The rate provides new input to matrix element calculations and search more interesting neutrino-less decay, most sensitive probe existence Majorana particles measurement neutrino mass scale.
We report on an improved measurement of the $2\ensuremath{\nu}\ensuremath{\beta}\ensuremath{\beta}$ half-life ${}^{136}$Xe performed by EXO-200. The use a large and homogeneous time-projection chamber allows for precise estimate fiducial mass used measurement, resulting in small systematic uncertainty. also discuss detail data-analysis methods double-$\ensuremath{\beta}$ decay searches with EXO-200, while emphasizing those directly related to present measurement. is found be...
We report experimental upper limits on WIMP-nucleon elastic scattering cross sections from the second science run of ZEPLIN-III at Boulby Underground Laboratory. A raw fiducial exposure 1344 kg⋅days was accrued over 319 days continuous operation between June 2010 and May 2011. total eight events observed in signal acceptance region nuclear recoil energy range 7–29 keV, which is compatible with background expectations. This allows exclusion scalar cross-section above 4.8×10−8 pb near 50...
The next-generation Enriched Xenon Observatory (nEXO) is a proposed experiment to search for neutrinoless double beta ($0\nu\beta\beta$) decay in $^{136}$Xe with target half-life sensitivity of approximately $10^{28}$ years using $5\times10^3$ kg isotopically enriched liquid-xenon time projection chamber. This improvement two orders magnitude over current limits obtained by significant increase the mass, monolithic and homogeneous configuration active medium, multi-parameter measurements...
The projected performance and detector configuration of nEXO are described in this pre-Conceptual Design Report (pCDR). is a tonne-scale neutrinoless double beta ($0νββ$) decay search $^{136}$Xe, based on the ultra-low background liquid xenon technology validated by EXO-200. With $\simeq$ 5000 kg enriched to 90% isotope 136, has half-life sensitivity approximately $10^{28}$ years. This represents an improvement about two orders magnitude with respect current results. Based experience gained...
The effects of doping concentration and temperature upon the transport properties in channel lateral n-channel SiC MOSFETs have been studied using current-voltage Hall-effect measurements. To interpret electrical measurements, numerical TCAD simulations performed. A simulation methodology that includes calculation Hall factor has developed applied. In addition, a new model for bulk mobility suggested to explain dependence MOSFET characteristics with different background concentrations. Based...
We studied the application of statistical reconstruction algorithms, namely maximum likelihood and least squares methods, to problem event in a dual phase liquid xenon detector. An iterative method was developed for in-situ PMT light response functions from calibration data taken with an uncollimated gamma-ray source. Using techniques described, performance ZEPLIN-III dark matter detector 122 keV gamma-rays. For inner part (R<100 mm), spatial resolutions 13 mm 1.6 FWHM were measured...
A search for Lorentz- and $CPT$-violating signals in the double beta decay spectrum of $^{136}\mathrm{Xe}$ has been performed using an exposure $100\text{ }\text{ }\mathrm{kg}\ifmmode\cdot\else\textperiodcentered\fi{}\mathrm{yr}$ with EXO-200 detector. No significant evidence spectral modification due to isotropic Lorentz-violation was found, a two-sided limit $\ensuremath{-}2.65\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}5}\text{...
Scintillation and ionisation yields for nuclear recoils in liquid xenon above 10 keVnr (nuclear recoil energy) are deduced from data acquired using broadband Am-Be neutron sources. The several exposures to two sources were compared detailed simulations. Energy-dependent scintillation giving acceptable fits the derived. Efficiency resolution effects treated a light collection Monte Carlo, measured photomultiplier response profiles hardware trigger studies. A gradual fall yield below ~40 is...
EXO-200 is a single phase liquid xenon detector designed to search for neutrinoless double-beta decay of $^{136}$Xe. Here we report on various Majoron-emitting modes based 100 kg$\cdot$yr exposure A lower limit $T^{^{136}Xe}_{1/2} >1.2 \cdot 10^{24}$ yr at 90% C.L. the half-life spectral index = 1 Majoron was obtained, corresponding constraint Majoron-neutrino coupling constant $|< g^{M}_{ee} >|<$ (0.8-1.7)$\cdot$10$^{-5}$.
Alpha decays in the EXO-200 detector are used to measure fraction of charged $^{218}\text{Po}$ and $^{214}\text{Bi}$ daughters created from $\ensuremath{\alpha}$ $\ensuremath{\beta}$ decays, respectively. $^{222}\text{Rn} \ensuremath{\alpha}$ liquid xenon (LXe) found produce $^{218}\text{Po}^{+}$ ions $50.3\ifmmode\pm\else\textpm\fi{}3.0%$ time, while remainder atoms neutral. The $^{214}\text{Bi}^{+}$ $^{214}\text{Pb} \ensuremath{\beta}$ LXe is be $76.4\ifmmode\pm\else\textpm\fi{}5.7%$,...
Organic luminophores are widely used in various optoelectronic devices, which serve for photonics, nuclear and particle physics, quantum electronics, medical diagnostics many other fields of science technology. Improving their spectral-luminescent characteristics particular technical requirements the devices is a challenging task. Here we show new concept to universal solution this problem by creation nanostructured organosilicon (NOLs), type dendritic molecular antennas. They combine best...
The EXO-200 Collaboration is searching for neutrinoless double $\ensuremath{\beta}$ decay using a liquid xenon (LXe) time projection chamber. This measurement relies on modeling the transport of charge deposits produced by interactions in LXe to allow discrimination between signal and background events. Here we present measurements transverse diffusion constant drift velocity electrons at fields 20 V/cm 615 data. At operating field 380 measures...
We present limits on the WIMP-nucleon cross section for inelastic dark matter derived from 2008 run of ZEPLIN-III. Cuts, notably scintillation pulse shape and scintillation-to-ionisation ratio, give a net exposure 63 kg.days in range 20-80keV nuclear recoil energy, which 6 events are observed. Upper signal rate maximum empty patch data. Under standard halo assumptions small region parameter space consistent, at 99% CL, with causing 1.17 ton.year DAMA modulation is allowed 90% CL: it mass...
We propose to detect and study neutrino neutral current coherent scattering off atomic nuclei with a two-phase emission detector using liquid xenon as working medium.Expected signals backgrounds are calculated for two possible experimental sites: Kalinin Nuclear Power Plant in the Russian Federation Spallation Neutron Source at Oak Ridge National Laboratory USA.Both sites have advantages well limitations.However experiment looks feasible either location.Preliminary design of supporting R&D...
The search for neutrinoless double-beta decay (0νββ) requires extremely low background and a good understanding of their sources influence on the rate in region parameter space relevant to 0νββ signal. We report studies various β γ backgrounds liquid-xenon-based EXO-2000νββ experiment. With this work we try better understand location strength specific compare conclusions radioassay results taken before during detector construction. Finally, discuss implications these EXO-200 as well...
Future tonne-scale liquefied noble gas detectors depend on efficient light detection in the VUV range. In past years Silicon Photomultipliers (SiPMs) have emerged as a valid alternative to standard photomultiplier tubes or large area avalanche photodiodes. The next generation double beta decay experiment, nEXO, with 5 tonne liquid xenon time projection chamber, will use SiPMs for detecting $178\,\text{nm}$ scintillation light, order achieve an energy resolution of $\sigma / Q_{\beta\beta} =...