М. Взнуздаев
A5070086869- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Particle Detector Development and Performance
- Quantum Chromodynamics and Particle Interactions
- Nuclear Physics and Applications
- Nuclear reactor physics and engineering
- Neutrino Physics Research
- Radiation Detection and Scintillator Technologies
- Nuclear physics research studies
- Muon and positron interactions and applications
- Atomic and Subatomic Physics Research
- Superconducting Materials and Applications
- Quantum, superfluid, helium dynamics
- Dark Matter and Cosmic Phenomena
- Magnetic confinement fusion research
- Advanced Chemical Physics Studies
- Fusion materials and technologies
- Particle accelerators and beam dynamics
- Particle Accelerators and Free-Electron Lasers
- Atomic and Molecular Physics
- Statistical Methods and Bayesian Inference
- Cold Fusion and Nuclear Reactions
- Medical Imaging Techniques and Applications
- Laser-Plasma Interactions and Diagnostics
- Nuclear Materials and Properties
Petersburg Nuclear Physics Institute
2014-2024
Kurchatov Institute
2017-2024
Forschungszentrum Jülich
2015-2020
Budker Institute of Nuclear Physics
2018-2019
University of Crete
2018-2019
Foundation for Research and Technology Hellas
2018-2019
Moscow Engineering Physics Institute
2003-2019
Istituto Nazionale di Fisica Nucleare, Sezione di Ferrara
2018-2019
Justus-Liebig-Universität Gießen
2019
University of Wuppertal
2016-2017
The rate of nuclear muon capture by the proton has been measured using a new technique based on time projection chamber operating in ultraclean, deuterium-depleted hydrogen gas, which is key to avoiding uncertainties from muonic molecule formation. hyperfine singlet ground state μp atom was obtained difference between μ− disappearance and world average for μ+ decay rate, yielding ΛS=725.0±17.4 s−1, induced pseudoscalar coupling nucleon, gP(q2=−0.88m2μ)=7.3±1.1, extracted.Received 16 April...
The MuCap experiment at the Paul Scherrer Institute has measured rate L_S of muon capture from singlet state muonic hydrogen atom to a precision 1%. A beam was stopped in time projection chamber filled with 10-bar, ultra-pure gas. Cylindrical wire chambers and segmented scintillator barrel detected electrons decay. is determined difference between mu- disappearance free decay rate. result based on analysis 1.2 10^10 decays, which we extract = (714.9 +- 5.4(stat) 5.1(syst)) s^-1 derive...
Isotopic purification of the protium and deuterium is an important requirement many physics experiments. A cryogenic facility for high-efficiency separation hydrogen isotopes with a distillation column as main element described. The instrument portable, so that it can be used at experimental site. It was designed built Petersburg Nuclear Physics Institute, Gatchina, Russia. Fundamental operating parameters have been measured including liquid holdup in packing, pressure drops across purity...
Background: The rate \lambda_pp\mu\ characterizes the formation of pp\mu\ molecules in collisions muonic p\mu\ atoms with hydrogen. In measurements basic weak muon capture reaction on proton to determine pseudoscalar coupling g_P, occurs from both atomic and molecular states. Thus knowledge is required for a correct interpretation these experiments. Purpose: Recently MuCap experiment has measured \Lambda_S singlet atom, employing low density active target suppress (PRL 110, 12504 (2013))....
The preservation of the nuclear polarization hydrogen atoms during recombination to molecules was observed on different surface materials in temperature range from 45 100 K and for magnetic fields up 1 T. On a gold fused quartz surface, expected molecular about 50% or lower atomic measured, while layer perfluoropolyether (Fomblin) shows nearly complete (at least 97%) process. Further experiments have possibility storing polarized deuterium use them nuclear-fusion installations. Another...
Lamb-shift polarimeters are used to measure the nuclear polarization of protons and deuterons at energies a few keV. In combination with an ionizer, hydrogen deuterium atoms was determined after taking into account loss during ionization process. The present work shows that or molecules can be measured as well, by ionizing injecting \documentclass[12pt]{minimal}\begin{document}$H_2^+$\end{document}H2+ (or \documentclass[12pt]{minimal}\begin{document}$D_2^+$\end{document}D2+) ions polarimeter.
We present an experiment to measure the spin-correlation coefficients for double-polarized deuteron-fusion in energy range of 10–100 keV determine quintet suppression factor. The setup and future upgrade plans are described. possible gain thermonuclear fusion reactors is discussed as well.
A: The study of DD reactions, especially with polarized reactants, helps for better understanding the processes taking place in nuclear astrophysics and fusion reactors.At PNPI Gatchina, Russia, PolFusion experiment crossing two beams, i.e. a deuteron deuterium beam, is able to measure angular distributions differential cross section and, therefore, spin-correlations coefficients different combinations adjustable polarization both beams center-of-mass energy between 10 100 keV.Some...
Polarized atomic beam sources have been in operation for many years to produce either nuclear polarized hydrogen or deuterium beams. In recent experiments, such a source was used polarize both isotopes independently at the same time. By recombination of atoms, hydrogen-deuterium molecules with all possible spin combinations can be created. Those isomers are useful further applications, like precision spectroscopy, as targets laser-particle acceleration, fuel fusion reactors, an option future...
The central detector in the MuSun experiment is a pad-plane time projection ionization chamber that operates without gas amplification deuterium at 31 K; it used to measure rate of muon capture process μ−+d→n+n+νμ. A new charge-sensitive preamplifier, operated 140 K, has been developed for this detector. It achieved resolution 4.5 keV(D2) or 120 e− RMS with zero capacitance 1.1 μ s integration laboratory tests. In experimental environment, electronic 10 250 0.5 time. excellent energy...
The Deuterium Removal Unit (DRU) has been designed and built at the Petersburg Nuclear Physics Institute (PNPI) to produce isotopically pure hydrogen with deuterium content less than 1 ppm. cryogenic distillation column of 2.2 cm inner diameter 155 packing height is main element DRU. Column performances different operating modes have measured. equivalent theoretical plate (HETP) for almost constant over a wide range vapour flow rates. depleted 0.1 ppm was produced in required quantity.
The main task of the future Compressed Baryonic Matter experiment (CBM), to be operated at FAIR facility GSI, Darmstadt, is exploration properties super-dense nuclear matter. search for in-medium modifications hadrons, study transition from dense hadronic matter quark-gluon matter, and possible location a critical endpoint in QCD phase diagram strongly interacting are most important physics goals CBM. Detailed measurements di-leptons stemming low-mass vector-mesons charmonium have large...