A5061122599- Quantum Chromodynamics and Particle Interactions
- Particle physics theoretical and experimental studies
- Nuclear physics research studies
- High-Energy Particle Collisions Research
- Superconducting Materials and Applications
- Dark Matter and Cosmic Phenomena
- Electrochemical Analysis and Applications
- Advanced NMR Techniques and Applications
- Astronomical and nuclear sciences
- Anodic Oxide Films and Nanostructures
- Nuclear Physics and Applications
- Glass properties and applications
- Experimental and Theoretical Physics Studies
- Conducting polymers and applications
- Neutrino Physics Research
- Gas Sensing Nanomaterials and Sensors
- Advanced battery technologies research
- Particle Detector Development and Performance
- Electron and X-Ray Spectroscopy Techniques
- Safety Warnings and Signage
- Gold and Silver Nanoparticles Synthesis and Applications
- Crystallography and Radiation Phenomena
- Orbital Angular Momentum in Optics
- Innovative Teaching Methods
- Microfluidic and Bio-sensing Technologies
University of Chemical Technology and Metallurgy
2010-2024
Thomas Jefferson National Accelerator Facility
2018
Ludwig-Maximilians-Universität München
2013
Lomonosov Moscow State University
2001
Dubna State University
1995-1996
Joint Institute for Nuclear Research
1995
Institute for Nuclear Research and Nuclear Energy
1991
Among the most fundamental observables of nucleon structure, electromagnetic form factors are a crucial benchmark for modern calculations describing strong interaction dynamics nucleon's quark constituents; indeed, recent proton data have attracted intense theoretical interest. In this Letter, we report new measurements factor ratio using recoil polarization method, at momentum transfers Q2=5.2, 6.7, and 8.5 GeV2. By extending range Q2 which G(E)(p) is accurately determined by more than 50%,...
Intensive theoretical and experimental efforts over the past decade have aimed at explaining discrepancy between data for proton electric to magnetic form factor ratio, G(E)/G(M), obtained separately from cross section polarization transfer measurements. One possible explanation this difference is a two-photon-exchange contribution. In an effort search effects beyond one-photon-exchange or Born approximation, we report measurements of observables in elastic H(e[over →],e(')p[over →])...
The GEp-III and GEp-2$\gamma$ experiments were carried out in Jefferson Lab's (JLab's) Hall C from 2007-2008, to extend the knowledge of $G_E^p/G_M^p$ highest practically achievable $Q^2$ search for effects beyond Born approximation polarization transfer observables elastic $\vec{e}p$ scattering. This article reports an expanded description common experimental apparatus data analysis procedure, results a final reanalysis both experiments, including previously unpublished full-acceptance...
The dependence of the reaction rate on solution layer thickness discovered in a previous work could be powerful tool for investigating photocatalytic reactions. A reduction apparent constant with growth dye concentration was found using this dependence. This decrement follows hyperbolic law. is explained based observed increment conductivity. In addition, it confirmed experimentally that decreases depth growth. possibility independent determination and adsorption equilibrium has been...
We have studied the reaction $p+$$^{27}\mathrm{Al}$ $\ensuremath{\rightarrow}$ $^{3}\mathrm{He}$$+p+{\ensuremath{\pi}}^{\ensuremath{-}}+X$ at recoil-free kinematics. An $\ensuremath{\eta}$ meson possibly produced in this would be thus almost rest laboratory system and could therefore bound with high probability, if nuclear states exist. The decay of such a state through ${N}^{*}(1535)$ resonance lead to proton-${\ensuremath{\pi}}^{\ensuremath{-}}$ pair emitted opposite directions. For these...
Plasmonic nanostructures are generated by substrate heating. A polymer decorated with clusters of gold particles is shrinking uniformly upon The separation distance between individual nanoparticles thereby reduced at the same time. process visible a color change nanoparticle due to plasmonic coupling.
Several processes of meson production in proton-deuteron collisions have been measured simultaneously using a calibrated magnetic spectrograph. Among these processes, the $η$ is seen clearly as sharp missing--mass peak on slowly varying background $p+d\to ^3\textrm{He} +X$ reaction. Knowing kinematics other reactions with well determined masses, it possible to deduce precise mass for meson. The final result, $m(η)=547.311\pm 0.028 \textrm{(stat)} \pm 0.032 \textrm{(syst) MeV/c}^2$,...
Recent results on the deuteron analyzing powers obtained in collisions of polarized deuterons with protons and light nuclei at intermediate high energies are reported. The sensitive to spin structure short range correlations. prospects program for hadronic reactions Nuclotron-NICA facility is discussed. polarimetry developments also presented.
We present new data for the polarization observables of final state proton in (1)H(γ,p)π(0) reaction. These can be used to test predictions based on hadron helicity conservation and perturbative QCD. have both small statistical systematic uncertainties were obtained with beam energies between 1.8 5.6 GeV π(0) scattering angles larger than 75° center-of-mass frame. The extend measurements database neutral pion photoproduction up E(γ)=5.6 GeV. results show a nonzero induced above resonance...
The status and prospects of 2-nucleon 3-nucleon short range correlations (SRCs) studies at Nuclotron-M (JINR) are presented. This program is focused on the investigations spin part SRCs with polarized deuteron beam from new high intensity deuterons ion source which under development JINR. wide experimental systematic polarization effects in dp- elastic scattering, nonmesonic breakup, dd → 3Hen(3Hp) d3He p4He reactions sensitive to using both internal extracted
An inexpensive Web camera connected to a personal computer with no additional hardware is used measure position and light intensity. Three experiments: ink diffusion in water, pendulum damped oscillations diffraction are described. The measurements done online the results observed on screen real time. configuration simple cheap, suitable for demonstrations laboratory exercises.
Inclusive measurements of pion production in proton-proton collisions the forward direction were undertaken at 400 and 600 MeV cooler synchrotron (COSY) Forschungszentrum Julich using Big Karl spectrograph. The high resolution π+ momentum ensured that there was an unambiguous separation pp→π+d/π+pn channels. Using these earlier data, ratio cross sections could be followed through Δ region compared with predictions final state interaction theory. Deviations are strongly influenced by...
The positively charged pions produced in proton–proton collisions at a beam momentum of 1640 MeV/c were measured the forward direction with high resolution magnetic spectrograph. missing mass distribution shows bound state (deuteron) clearly separated from pn continuum. Despite very good resolution, there is no evidence for any significant production system spin-singlet state. However, σ(pp→π+pn)/σ(pp→π+d) cross section ratio about twice as large that predicted S-wave final-state-interaction...
A simple computer experiment is described for measuring the shape of a free hanging chain or catenary. The two ends are attached to screen. (x,y) coordinates points measured using pointing device (mouse). data compared with catenary equation. Such an requires only personal and needs no additional hardware. appropriate students. It includes all stages `big' experiments - theory, planning, acquisition processing. idea screen mouse as devices can also be applied other physical phenomena.
Glasses with the compositions 20.1Na2O∙(23.1-y)BaO∙yZrO2∙23TiO2∙9.8B2O3∙21SiO2∙3Al2O3 y = 0, 0.5, 1, 2, 3 and 6 mol% were prepared using a traditional melt-quenching technique. The thermophysical properties, i.e. glass transition temperature, Tg crystallization peak maximum Tc determined for obtained glasses by differential scanning calorimetry showed that increasing zirconium oxide concentrations resulted in an initial increase of values after reaching – subsequent decrease. difference...