A5101872947- Magnetic confinement fusion research
- Ionosphere and magnetosphere dynamics
- Dust and Plasma Wave Phenomena
- Solar and Space Plasma Dynamics
- Earthquake Detection and Analysis
- Laser-Plasma Interactions and Diagnostics
- Plasma Diagnostics and Applications
- Laser-induced spectroscopy and plasma
- Particle accelerators and beam dynamics
- Advanced Data Storage Technologies
- Geomagnetism and Paleomagnetism Studies
- Distributed and Parallel Computing Systems
- Scientific Computing and Data Management
- Fusion materials and technologies
- Vacuum and Plasma Arcs
- Non-Destructive Testing Techniques
- Geophysics and Gravity Measurements
- Meteorological Phenomena and Simulations
- Gas Dynamics and Kinetic Theory
- Magnetic Field Sensors Techniques
- Particle physics theoretical and experimental studies
- Educational Innovations and Challenges
- Nanofluid Flow and Heat Transfer
- Pulsars and Gravitational Waves Research
- Impulse Buying and Technology Impacts
Princeton Plasma Physics Laboratory
2024
Guru Nanak Dev University
2023
Tri Alpha Energy (United States)
2021
University of California, Irvine
2021
Institute for Plasma Research
2015-2019
Swarthmore College
2016-2019
TAE Technologies, Inc. (TAE) is pursuing an alternative approach to magnetically confined fusion, which relies on field-reversed configuration (FRC) plasmas composed of mostly energetic and well-confined particles by means a state-of-the-art tunable energy neutral-beam (NB) injector system. TAE's current experimental device, C-2W (also called 'Norman'), the world's largest compact-toroid device has made significant progress in FRC performance, producing record breaking, high temperature...
Views Icon Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Twitter Facebook Reddit LinkedIn Tools Reprints and Permissions Cite Search Site Citation Manjit Kaur, Sayak Bose, P. K. Chattopadhyay, D. Sharma, J. Ghosh, Y. C. Saxena, Edward Thomas; Generation of multiple toroidal dust vortices by a non-monotonic density gradient in direct current glow discharge plasma. Phys. Plasmas 1 September 2015; 22 (9): 093702. https://doi.org/10.1063/1.4929916 Download...
Observation of dust cloud rotation in parallel-plate DC glow discharge plasma is reported here. The experiments are carried out at high pressures (∼130 Pa) with a metallic ring placed on the lower electrode (cathode). rotates poloidally vertical plane near cathode surface. This structure continuous toroidally. Absence magnetic field rules possibility E × B induced ion flow as cause rotation. rotational structures exist even water cooled cathode. Therefore, temperature gradient driven...
Measurements of local plasma parameters in dusty are crucial for understanding the physics issues related to such systems. The Langmuir probe, a small electrode immersed plasma, provides measurements. However, designing probe system environment demands special consideration. First, has be miniaturized enough so that its perturbation on ambient dust structure is minimal. At same time, dimensions must well-defined theory exists interpretation characteristics. associated instrumentation also...
We have explored the thermodynamics of compressed magnetized plasmas in laboratory experiments and we call these studies ‘magnetothermodynamics’. The are carried out Swarthmore Spheromak eXperiment device. In this device, a plasma source is located at one end other end, closed conducting can installed. generate parcels observe their compression against wall cylinder. parameters such as density, temperature magnetic field measured during using HeNe laser interferometry, ion Doppler...
Magnetic pickup loops or B-dot probes are one of the oldest known sensors time-varying magnetic fields. The operating principle is based on Faraday's law electromagnetic induction. However, obtaining accurate measurements fields using these kinds a challenging task. A probe and its associated circuit prone to electrical oscillations. As result, measured signal may not faithfully represent field sampled by probe. In this paper, we have studied transient response field. Methods removing...
We report measurements of the equations state a fully relaxed magnetohydrodynamic (MHD) laboratory plasma. Parcels magnetized plasma, called Taylor states, are formed in coaxial plasma gun, and allowed to relax drift into closed flux conserving volume. Density, ion temperature, magnetic field measured as function time states compress heat. The theoretically predicted MHD double adiabatic compared experimental measurements. find that equation is inconsistent with our data.
Dust vortices with a void at the centre are reported in this paper. The role of spatial variation plasma potential rotation dust particles is studied parallel plate glow discharge plasma. Probe measurements reveal existence local minimum region formation vortex. well attracts positively charged ions, while it repels negatively particles. caused by interplay two oppositely directed ion drag and Coulomb forces. balance between these forces found to play major radial confinement above cathode...
Inverse mirror plasma experimental device has been designed and fabricated for detailed investigation of phase mixing wave breaking oscillation/wave. The produces quiescent magnetized over a wide operating range using multifilamentary source with low filament spacing in cusp geometry along flexible transition magnetic field region between the chamber main chamber. Argon produced pressure from 1.7 × 10(-5) mbar to 9 10(-4) mbar, achieving densities ∼10(9) cm(-3)-10(12) cm(-3) temperatures...
We describe ion and electron temperature measurements in the Swarthmore Spheromak Experiment (SSX) MHD wind tunnel with goal of understanding limitations on lifetime our Taylor-state plasma. A simple model based equilibrium eigenvalue Spitzer resistivity predicted satisfactorily during first phase plasma evolution. measured an average T e along a chord by taking ratio C I 97.7 nm to V 155 line intensities using vacuum ultraviolet (VUV) monochromator. also recorded local n double Langmuir...
We describe the design of a Thomson scattering (TS) diagnostic to be used on SMall Aspect Ratio Tokamak (SMART). SMART is spherical tokamak being commissioned in Spain that aims explore positive triangularity and negative plasma scenarios at low aspect ratio. The TS designed operate high spatial resolution, 6 mm length low-field side 9 high-field regions, wide dynamic range, electron temperature from 1 eV keV density 5×1018m−3 1×1020m−3, resolve large gradients formed edge scrape-off layer...
We describe the design of a Thomson scattering (TS) diagnostic to be used on SMall Aspect Ratio Tokamak (SMART). SMART is spherical tokamak being commissioned in Spain that aims explore positive triangularity (PT) and negative (NT) plasma scenarios at low aspect ratio. The TS designed enable wide range electron temperature (1 eV 1 keV) density (0.5 - 10 $\times 10^{19} ~\rm{m^{ 3}}$) measurements. A 2Joule laser operating 1064 nm will probe plasma. capable burst mode 1kHz, 2kHz, 4kHz...
Measuring the equations of state a compressed magnetized plasma is important for both advancing fusion experiments and understanding natural systems such as stellar winds. In this paper, we present results from our on thermodynamics plasmas; call these studies “magnetothermodynamics.” experiments, generate parcels relaxed, at one end linear Swarthmore Spheromak eXperimental device observe their compression in closed conducting boundary installed other end. Plasma parameters are measured...
Magnetothermodynamics is the study of compression and expansion magnetized plasma with an eye toward identifying equations state (EOSs) for magneto-inertial fusion experiments. We present recent results from Swarthmore Spheromak Experiment (SSX) experiments on thermodynamics compressed plasmas called Taylor states. In these experiments, we generate twisted flux ropes magnetized, relaxed accelerated one end a 1.5-m-long copper conserver observe their in closed conducting boundary installed at...