A. M. Gezhaev
A5071039402- Neutrino Physics Research
- Particle physics theoretical and experimental studies
- Radioactivity and Radon Measurements
- Astrophysics and Cosmic Phenomena
- Dark Matter and Cosmic Phenomena
- Radioactive Decay and Measurement Techniques
- Nuclear Physics and Applications
- Radioactive contamination and transfer
- Radiation Detection and Scintillator Technologies
- Advanced NMR Techniques and Applications
- Muon and positron interactions and applications
- Atomic and Subatomic Physics Research
- Astronomical and nuclear sciences
- Nuclear reactor physics and engineering
- Graphite, nuclear technology, radiation studies
- Pulsars and Gravitational Waves Research
- Gamma-ray bursts and supernovae
- Radiation Therapy and Dosimetry
- Earthquake Detection and Analysis
- Solid-state spectroscopy and crystallography
- Quantum, superfluid, helium dynamics
- Medical Imaging Techniques and Applications
- Cold Fusion and Nuclear Reactions
- Nuclear physics research studies
- Scientific Measurement and Uncertainty Evaluation
Institute for Nuclear Research
2013-2024
Amorepacific (South Korea)
2024
Kabardino-Balkarian Scientific Center
2012-2022
Russian Academy of Sciences
2007-2012
The Advanced Molybdenum-based Rare process Experiment (AMoRE) aims to search for neutrinoless double beta decay (0$\nu\beta\beta$) of $^{100}$Mo with $\sim$100 kg $^{100}$Mo-enriched molybdenum embedded in cryogenic detectors a dual heat and light readout. At the current, pilot stage AMoRE project we employ six calcium molybdate crystals total mass 1.9 kg, produced from $^{48}$Ca-depleted ($^{48\textrm{depl}}$Ca$^{100}$MoO$_4$). simultaneous detection heat(phonon) scintillation (photon)...
Abstract AMoRE-II aims to search for neutrinoless double beta decay ( $$0\nu \beta $$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mn>0</mml:mn> <mml:mi>ν</mml:mi> <mml:mi>β</mml:mi> </mml:mrow> </mml:math> ) with an array of 423 $$\hbox {Li}_2^{100}\hbox {MoO}_4$$ <mml:msubsup> <mml:mtext>Li</mml:mtext> <mml:mn>2</mml:mn> <mml:mn>100</mml:mn> </mml:msubsup> <mml:msub> <mml:mtext>MoO</mml:mtext> <mml:mn>4</mml:mn> </mml:msub> crystals operating in the cryogenic...
AMoRE searches for the neutrinoless double beta decay using 100 kg of enriched Mo100. Scintillating molybdate crystals coupled with a metallic magnetic calorimeter operate at milli-Kelvin temperatures to measure energy electrons emitted in decay. AMoRE-I is demonstrator full-scale AMoRE, operated Yangyang Underground Laboratory over two years. The exposure was 8.02 year (or 3.89 kgMo100 year), and total background rate near Q value 0.025±0.002 counts/keV/kg/year. We observed no indication...
AMoRE (Advanced Mo based Rare process Experiment) collaboration is going to use calcium molybdate crystals as cryogenic scintillation detector in a search for neutrinoless DBD of 100Mo isotope. Simultaneous detection phonons and light will be used reject internal background. A FWHM resolution 0.2% the phonon channel has been achieved with 0.5 cm3 crystal. Several 40Ca100MoO4 (≈ kg) have developed from enriched depleted 40Ca materials. The yield these shown comparable reference CaMoO4...
The AMoRE-II experiment will search for the 0 νββ decay of 100 Mo nuclei using molybdate crystal scintillators, operating at milli-Kelvin (mK) temperatures, with a total 80 kg Mo. background goal is 10 –4 counts/keV/kg/year in region interest around Q-value 3,034 keV. To achieve this level, rate signals arising from emissions produced by decays radioactive impurities detector and shielding materials must be strictly controlled. do this, concentrations such are measured controlled through...
Abstract The AMoRE collaboration searches for neutrinoless double beta decay of $$^{100}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mmultiscripts> <mml:mrow/> <mml:mn>100</mml:mn> </mml:mmultiscripts> </mml:math> Mo using molybdate scintillating crystals via low temperature thermal calorimetric detection. early phases the experiment, AMoRE-pilot and AMoRE-I, have demonstrated competitive discovery potential. Presently, AMoRE-II featuring a large detector array with...
The AMoRE (Advanced Mo-based Rare process Experiment) project is a series of experiments that use advanced cryogenic techniques to search for the neutrinoless double-beta decay \mohundred. work being carried out by an international collaboration researchers from eight countries. These searches involve high precision measurements radiation-induced temperature changes and scintillation light produced in ultra-pure \Mo[100]-enriched \Ca[48]-depleted calcium molybdate...
A calcium molybdate ( <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><tex-math notation="LaTeX">$\text{CaMoO}_{4}$</tex-math></inline-formula> ) crystal scintillator, with molybdenum enriched in notation="LaTeX">$^{100}\text{Mo}$</tex-math></inline-formula> and depleted notation="LaTeX">$^{48}\text{Ca}$</tex-math></inline-formula> notation="LaTeX">$^{40}\text{Ca}{}^{100}\text{MoO}_{4}$</tex-math></inline-formula> ), was developed by...
Scintillation properties and radioactive contamination of calcium molybdate scintillating crystals depleted in <formula formulatype="inline" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><tex Notation="TeX">$^{48}$</tex> </formula> Ca enriched Notation="TeX">$^{100}$</tex> Mo ( Notation="TeX">$^{40}$</tex> MoO Notation="TeX">$_{4}$</tex> ) have been studied to prepare a xmlns:xlink="http://www.w3.org/1999/xlink"> <tex...
Abstract The Advanced Mo-based Rare process Experiment (AMoRE)-Pilot experiment is an initial phase of the AMoRE search for neutrinoless double beta decay $$^{100}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msup> <mml:mrow /> <mml:mn>100</mml:mn> </mml:msup> </mml:math> Mo, with purpose investigating level and sources backgrounds. Searches generally require ultimately low Surface $$\alpha $$ <mml:mi>α</mml:mi> decays on crystals themselves or nearby materials can...
The AMoRE collaboration searches for neutrinoless double beta decay of $^{100}$Mo using molybdate scintillating crystals via low temperature thermal calorimetric detection. early phases the experiment, AMoRE-pilot and AMoRE-I, have demonstrated competitive discovery potential. Presently, AMoRE-II featuring a large detector array with about 90 kg isotope, is under construction.This paper discusses baseline design characterization lithium cryogenic calorimeters to be used in modules. results...
The resent observations of neutrino oscillations are conclusive evidence that the has a non-zero mass, and provides motivation for neutrinoless double beta decay (0ν DBD) searches. Searches 0ν DBD challenging experimental approaches aimed at establishing neutrino's nature (Dirac or Majorana) absolute mass scale [1–3].
The results of measurements natural radioactive isotopes content in different source materials and enriched composition used for CaMoO4 scintillation crystal growing are presented. crystals to be the experiment search double neutrinoless betas-decay Mo-100.
Description of the TAU-4 installation intended for long-term monitoring half-life value $T_{1/2}$ $^{212}$Po is presented. Natural thorium used as a source mother's chain. The methods measurement and data processing are described. comparative results short test measurements carried out in ground (680 h) underground (564 laboratories given. Averaged =$294.09\pm 0.07$ ns has been found level set similar one set. solar-daily variations with amplitudes $A_{So}=(11.7\pm 5.2)\times10^{-4}$...
We report a study on the background of Advanced Molybdenum-Based Rare process Experiment (AMoRE), search for neutrinoless double beta decay (\znbb) $^{100}$Mo. The pilot stage experiment was conducted using $\sim$1.9 kg \CAMOO~ crystals at Yangyang Underground Laboratory, South Korea, from 2015 to 2018. compared measured $\beta/\gamma$ energy spectra in three experimental configurations with results Monte Carlo simulations and identified sources each configuration. replaced several detector...
AMoRE-II aims to search for neutrinoless double beta decay with an array of 423 Li$_2$$^{100}$MoO$_4$ crystals operating in the cryogenic system as main phase Advanced Molybdenum-based Rare process Experiment (AMoRE). AMoRE has been planned operate three phases: AMoRE-pilot, AMoRE-I, and AMoRE-II. is currently being installed at Yemi Underground Laboratory, located approximately 1000 meters deep Jeongseon, Korea. The goal reach up $T^{0\nu\beta\beta}_{1/2}$ $\sim$ 6 $\times$ 10$^{26}$ years,...