V. Bharadwaj
A5047330215- Particle Accelerators and Free-Electron Lasers
- Particle accelerators and beam dynamics
- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- High-Energy Particle Collisions Research
- Superconducting Materials and Applications
- Gyrotron and Vacuum Electronics Research
- Muon and positron interactions and applications
- Particle Detector Development and Performance
- Advanced X-ray Imaging Techniques
- Magnetic properties of thin films
- Nuclear physics research studies
- Dark Matter and Cosmic Phenomena
- Radiation Therapy and Dosimetry
- Nuclear Physics and Applications
- Radiation Detection and Scintillator Technologies
- Neutrino Physics Research
- Topological Materials and Phenomena
- Magnetic and transport properties of perovskites and related materials
- Physics of Superconductivity and Magnetism
- Laser-Plasma Interactions and Diagnostics
- Atomic and Molecular Physics
- Atomic and Subatomic Physics Research
- Magnetic Properties of Alloys
- Magnetic confinement fusion research
M S Ramaiah University of Applied Sciences
2025
Johannes Gutenberg University Mainz
2020-2024
Netaji Subhas University of Technology
2024
Government Medical College
2023
Linac Coherent Light Source
2008-2016
SLAC National Accelerator Laboratory
1999-2014
Menlo School
2002-2009
Stanford University
1999-2008
Cornell University
2003-2007
Daresbury Laboratory
2007
The ever-growing demand for device miniaturization and energy efficiency in data storage computing technology has prompted a shift towards antiferromagnetic topological spin textures as information carriers. This is primarily owing to their negligible stray fields, leading higher possible density potentially ultrafast dynamics. We realize this work such chiral in-plane namely merons, antimerons, bimerons synthetic antiferromagnets by concurrently engineering the effective perpendicular...
Altermagnets are compensated magnets with unconventional $d$-, $g$-, and $i$-wave spin order in reciprocal space. So far the search for new altermagnetic candidates has been focused on materials which magnetic unit cell is identical to nonmagnetic one, i.e., structures zero propagation vector. Here, we substantially broaden family of by predicting supercell altermagnets. Their constructed enlarging primitive cell, resulting a nonzero vector structure. This connection configuration ordering...
We have performed a search for the 1P1 state of charmonium resonantly formed in p¯p annihilations, close to center gravity 3PJ states. report results from study J/ψ+π0 and J/ψ+2π final observed statistically significant enhancement p¯+p→J/ψ+π0 cross section at √s ≃3526.2 MeV. This has characteristics narrow resonance mass, total width, production consistent with what is expected state. In our we found no candidates reactions p¯+p→J/ψ+π0+π0 p¯+p→J/ψ+π++π−.Received 10 July...
Cross sections for the reaction pp¯→e+e− have been measured at s=8.9,12.4, and 13.0 GeV2. The cross analyzed to obtain proton electromagnetic form factors in timelike region. We find that GM(q2)∝q−4α2s(q2) q2≥5 (GeV/c)2.Received 30 September 1992DOI:https://doi.org/10.1103/PhysRevLett.70.1212©1993 American Physical Society
Results on the nucleon structure function, $\ensuremath{\nu}{W}_{2}$, are presented for $0.2<~{q}^{2}<~50$ ${(\mathrm{G}\mathrm{e}\mathrm{V}/\mathit{c})}^{2}$ and $5<~\ensuremath{\nu}<~130$ GeV. They were obtained by scattering 147-GeV positive muons inelastically from a liquid deuterium target.
Results on the proton structure function, $\ensuremath{\nu}{W}_{2}$ are presented for $0.3<{q}^{2}<50$ Ge${\mathrm{V}}^{2}$ and $5<\ensuremath{\nu}<130$ GeV. They compared to earlier data displayed demonstrate violations of scaling. Values reported energy-momentum sum rule $R\ensuremath{\equiv}\frac{{\ensuremath{\sigma}}_{L}}{{\ensuremath{\sigma}}_{T}}$ over a limited kinematic region.
Measurements have been made of the inclusive scattering 96, 147, and 219 GeV muons from hydrogen, 147 deuterium. Results are presented for nucleon structure function F2(x,Q2) [≡νW2(x,Q2)] 10<ν<200 0.2<Q2<80 GeV2. The value F2 rises with Q2 at small x, falls large in agreement ideas quantum chromodynamics. An average ratio σLσT≡R=0.52±0.35 has obtained region 0.003<x<0.10 0.4<Q2<30 values this experiment combined those other charged-lepton experiments to determine moments functions. variation...
First experimental results from the final focus test beam (FFTB) are reported. The vertical dimension of a 47-GeV electron SLAC linac has been reduced at focal point FFTB by demagnification 320 to height approximately 70 nm.
Inelastic and elastic Jψ photoproduction on hydrogen are investigated at a mean energy of 105 GeV. The inelastic cross section with EψEγ<0.9 is significantly lower than the corresponding result for muoproduction iron targets, but consistent second-order perturbative QCD calculation.Received 9 November 1983DOI:https://doi.org/10.1103/PhysRevLett.52.795©1984 American Physical Society
An experiment (E166) at the Stanford Linear Accelerator Center has demonstrated a scheme in which multi-GeV electron beam passed through helical undulator to generate multi-MeV, circularly polarized photons were then converted thin target produce positrons (and electrons) with longitudinal polarization above 80% 6 MeV. The results are agreement Geant4 simulations that include dominant polarization-dependent interactions of electrons, positrons, and matter.Received 8 March...
We have used coherent Smith-Purcell radiation (cSPr) in order to determine the temporal profile of sub-ps long electron bunches at Facility for Advanced Accelerator Experimental Tests, SLAC. The measurements reported here were carried out June 2012 and April 2013. rms values bunch length varied between 356 604 fs, depending on accelerator settings. resolution system was limited by range detectable wavelengths which was, turn, determined choice grating periods these experiments achievable...
We study the emergence and dynamics of in-plane skyrmions in collinear ferromagnetic heterostructures. present a minimal energy model for this class magnetic textures, determine crystal symmetries compatible with it propose material candidates, based on only, observation these topological solitons. calculate exact solutions absence dipolar interactions at critical coupling, latter defined by relations $H = K$ $D \sqrt{AK}$ strength external field Dzyaloshinskii coupling constant,...
We report new measurements for the mass, width, and branching ratios $\frac{J}{\ensuremath{\psi}}$ ${\ensuremath{\psi}}^{\ensuremath{'}}$. These charmonium states are formed exclusively in $\overline{p}p$ annihilations at Fermilab Antiproton Accumulator ring, where stochastically cooled antiprotons brought into collision with protons of an internal hydrogen gas jet target. The antiproton energy is precisely controlled measured allowing accurate measurement resonance parameters. From shape...
We report the first observation and cross-section measurement of ${\ensuremath{\nu}}_{e}+{e}^{\ensuremath{-}}\ensuremath{\rightarrow}{\ensuremath{\nu}}_{e}+{e}^{\ensuremath{-}}$. Using neutrinos energy less than 53 MeV, we observed 63\ifmmode\pm\else\textpm\fi{}17 events consistent with $\ensuremath{\nu}+{e}^{\ensuremath{-}}\ensuremath{\rightarrow}\ensuremath{\nu}+{e}^{\ensuremath{-}}$, which 51\ifmmode\pm\else\textpm\fi{}17 are assigned to The resulting cross section,...
We have studied the production of $\ensuremath{\rho}$ and $\ensuremath{\varphi}$ mesons from muon scattering on a liquidhydrogen target at 150 100 GeV. For we observe skewed mass distribution which becomes somewhat more normal with increasing ${Q}^{2}$ (the square four-momentum transferred muon), an exponential in $t$ to proton) slope is consistent slight decrease as increases. The dependence cross section follows that propagator little contribution longitudinal production. angular decay...