A5022161881- Atomic and Subatomic Physics Research
- Quantum, superfluid, helium dynamics
- Ionosphere and magnetosphere dynamics
- Solar and Space Plasma Dynamics
- Nuclear Physics and Applications
- Geomagnetism and Paleomagnetism Studies
- Superconducting Materials and Applications
- Cold Atom Physics and Bose-Einstein Condensates
- Magnetic confinement fusion research
- Geophysics and Gravity Measurements
- Particle accelerators and beam dynamics
- Electromagnetic Launch and Propulsion Technology
- Gyrotron and Vacuum Electronics Research
- Pulsed Power Technology Applications
- Electrical and Electromagnetic Research
- Radiation Detection and Scintillator Technologies
- Electric Power Systems and Control
- Material Science and Thermodynamics
- Radioactive Decay and Measurement Techniques
Kurchatov Institute
2018-2024
Petersburg Nuclear Physics Institute
2018-2023
St Petersburg University
2016-2017
All results of the neutron lifetime measurements performed in last 20 years with ultracold storage method are a good agreement. These also consistent latest most accurate decay asymmetry within Standard Model. However, there is significant discrepancy at $3.6\ensuremath{\sigma}$ (1% probability) level between averaged result experiments and beam method. This article addresses possible causes discrepancy. We focused on finding spectrum systematic corrections experiment. Four separate sources...
The paper proposes an experiment to measure the neutron lifetime by storing ultracold neutrons in a rotating magnetic trap. trap is set of NdFeB permanent magnets. By around horizontal axis, it possible carry out gravitational capture and their holding. A design option presented when two traps are located one installation on same axis: material magnetic. sensitivity was assessed comparison with under equal measurement conditions. One factors influencing systematic error will be process...
An experiment on the measurement of ratio axial coupling constant to vector one is under development. The main idea measure values A and B in same setup. additional polarization not necessary. accuracy achieved date measuring λ 2 × 10-3. It expected that will be order 10-4. Some particular problems mathematical modeling concerning are considered. force lines for given tabular field a magnetic trap studied. dependences longitudinal transverse non-uniformity coefficients coordinates regarded....
In the paper we continue study of precipitation regions high-energy charged particles, carried out by authors since 2002. contrast to previous papers, where a stationary source electrons was considered, it is assumed that moves along low circular near-earth orbit with constant velocity. The position set inclination angle orbital plane equatorial and longitude ascending node. total number injected determined strength complete revolutions makes circumference. Construction produced using...
The problem of finding the depolarization losses neutrons is investigated in connection with need to determine systematic error for experiments magnetic storage ultracold traps. In this paper, we consider three methods estimate probability: classical, quantum mechanical and approximate one. They are used probability two traps: trap developed Los Alamos National Laboratory (LANL) one designed neutron physics laboratory “NRC Kurchatov Institute”—PNPI. It shown that all successfully...
An experiment is being developed to determine the value of λ, ratio axial weak interaction constant GA vector GV, by simultaneously measuring electron (A) and neutrino (B) asymmetries β-decay on same setup. The λ measurement based ratio: = (A – B)/(A + B). Simultaneous measurements A B setup are suggested be carried out using ultracold neutrons stored in magnetic field a superconducting solenoid. proposed method for determining firstly, makes it possible neglect contribution Firtz...
Abstract The paper is devoted to the study of precipitation regions high-energy electrons injected by a point source moving in near-Earth space along an elliptical orbit. are constructed on basis numerical integration ordinary differential equations describing motion dipole magnetic field. influence some parameters orbit structure considered. They eccentricity, focal parameter, incline angle selected axis plane geographic equator and energy electrons. difference between obtained formed for...