A5012708804- Magnetic confinement fusion research
- Plasma Diagnostics and Applications
- Particle accelerators and beam dynamics
- Atomic and Molecular Physics
- Fusion materials and technologies
- Laser-Plasma Interactions and Diagnostics
- Laser-induced spectroscopy and plasma
- Nuclear Physics and Applications
- Ionosphere and magnetosphere dynamics
- Superconducting Materials and Applications
- Metal and Thin Film Mechanics
- Semiconductor materials and devices
- Astro and Planetary Science
- Nuclear physics research studies
- Particle Accelerators and Free-Electron Lasers
- Ion-surface interactions and analysis
- X-ray Spectroscopy and Fluorescence Analysis
- Nuclear reactor physics and engineering
- Dust and Plasma Wave Phenomena
- Solar and Space Plasma Dynamics
- Mass Spectrometry Techniques and Applications
- Atomic and Subatomic Physics Research
- Advanced Chemical Physics Studies
- Cold Atom Physics and Bose-Einstein Condensates
- Nuclear Materials and Properties
Princeton Plasma Physics Laboratory
2013-2024
Ben-Gurion University of the Negev
2021-2024
Princeton University
2006-2023
Soreq Nuclear Research Center
2023
Israel Atomic Energy Commission
2023
Stanford University
2021-2022
Sorbonne Université
2020
Sorbonne Paris Cité
2020
Voss Scientific (United States)
2011-2018
University of Cambridge
2017
Deuterium neutral beams with energies up to 110 keV were injected into TFTR (Tokamak Fusion Test Reactor) plasmas at low magnetic field such that the beam injection velocities comparable Alfv\'en velocity. Excitation of toroidal eigenmodes was observed by Mirnov coils and emission spectroscopy.
For any given two-body Hamiltonian, there exists a large class of unitarily equivalent Hamiltonians that lead to the same scattering phase shifts at all energies. The purpose this paper is exhibit typical saturation curves for reasonable potentials. binding energy per particle changes by several MeV in either direction, and minimum higher or lower density as increases decreases. Softening potential binding. separation approximation reaction matrix provides qualitative insight into these...
A system for producing 300-μsec bursts of 1017 metal atoms with 3-eV average energy is described. It shown that this can be successfully used to introduce impurities into CTR-oriented tokamaks transport and confinement studies.
The isotopes of nickel are described by a shell model within the identical-nucleon configurations ${(2{p}_{\frac{3}{2}}, 1{f}_{\frac{5}{2}}, 2{p}_{\frac{1}{2}})}^{n}$. A least-squares fit to observed level energies yields an effective interaction which satisfactorily reproduces structure Ni from ${\mathrm{Ni}}^{58}$ ${\mathrm{Ni}}^{65}$. This best-fit is shown indicate repulsive interactions between shells and conserve seniority useful degree approximation. matrix elements in fair agreement...
Using laser-induced fluorescence, measurements have been made of metastable argon-ion, Ar+*(3d4F7/2), velocity distributions on the major axis an axisymmetric magnetic-mirror device whose plasma is sustained by helicon wave absorption. Within mirror, these ions sub-eV temperature and, at most, a subthermal axial drift. In region outside mirror coils, conditions are found where field-parallel above acoustic speed, to energy ∼30 eV, while ion remains low. The supersonic Ar+*(3d4F7/2)...
Experimental results from high-power neutral-beam-injection experiments on the Princeton Large Torus tokamak are reported. At highest beam powers (2.4 MW) and lowest plasma densities [${n}_{e}(0)=5\ifmmode\times\else\texttimes\fi{}{10}^{13}$ ${\mathrm{cm}}^{\ensuremath{-}3}$], ion temperatures of 6.5 keV achieved. The collisionality ${{\ensuremath{\nu}}_{i}}^{*}$ drops below 0.1 over much radial profile. Electron heating $\frac{\ensuremath{\Delta}{T}_{e}}{{T}_{e}}\ensuremath{\approx}50%$ has...
The development of noninductive current drive is great importance in establishing the tokamak as a long-pulse or steady-state fusion reactor. Lower hybrid waves, carrying 200 kW power at 800 MHz, have been launched into Princeton Large Torus to initiate and discharge level excess 100 kA.
We have injected short bursts of aluminum into the adiabatic-toroidal-compressor (ATC) tokamak, and measured time evolution radial distribution highly ionized states aluminum. The results are compared with a computer code describing neoclassical impurity diffusion.
A general reaction network for filamentous self-assembly unifies mechanistic descriptions and links the overall scaling behaviour to underlying rate-determining steps.
Measures for controlling antimicrobial resistance are urgently required. We describe here AntibioGame®, a serious game improving the training of medical students in antibiotic use primary care. aimed to design antibiotics teaching and evaluate its usability playability by students. used various gamification techniques (e.g. mascots, avatars, rewards, leader board) cartoon graphics AntibioGame®. This implements clinical case templates built from list learning goals defined team through an...
High-resolution spectra of the Ly-${\ensuremath{\alpha}}_{1}$ and Ly-${\ensuremath{\alpha}}_{2}$ lines hydrogenlike titanium, Ti XXII, associated dielectronic satellites which are due to transitions $1snl\ensuremath{-}2pnl$ with $n\ensuremath{\ge}2$, have been observed from tokamak discharges auxiliary ion-cyclotron heating central electron temperatures 2 keV densities 8\ifmmode\times\else\texttimes\fi{} ${10}^{13}$ ${\mathrm{cm}}^{\ensuremath{-}3}$ on Princeton Large Torus (PLT). The data...
Spectra of the n=3 to n=2 transitions in neonlike silver emitted from Princeton Large Torus have been recorded with a high-resolution Bragg-crystal spectrometer. The measurements cover wavelength region 3.3--4.1 A\r{} and include forbidden 3p\ensuremath{\rightarrow}2p electric quadrupole lines. Transitions adjacent sodiumlike, magnesiumlike, aluminumlike charge states also observed identified. Ly-\ensuremath{\alpha} spectra hydrogenlike argon iron, K\ensuremath{\alpha} heliumlike argon,...
A number of spectrum lines highly ionized copper, nickel, iron, chromium, and germanium have been observed the corresponding transitions identified. The element under study is introduced into discharge Princeton Large Torus tokamak by means rapid ablation a laser pulse. ionization state generally distinguishable from time behavior emitted light. New identifications are based on predicted wavelengths (from isoelectronic extrapolations other data) approximate expected intensities. All pertain...
The evolution of the density profile in PLT during intense gas puffing is documented and analysed. Measurements spectrum low-energy edge neutrals change central neutral density, indicate that charge-exchange processes alone cannot account for rise. transient changes can be reproduced numerically by a diffusivity ∼ 104 cm2·s−1 spatially averaged inward flow 103 cm·s−1. These transport coefficients are 10—102 times larger than neoclassical. ion energy confinement reduced, small-scale...
Reduction of electron or hole trapping in SiO2 was achieved by short-time lamp annealing. The characterization done the avalanche injection technique on metal-oxide-silicon capacitor structures with aluminum gates and thickness 50 nm. Electron water related centers is reduced 10-s anneals Ar N2 ambients at 600–800 °C. Hole short an O2 ambient 1000 °C optimal time 100 s. anneal much more effective if oxide had a long post-oxidation which produces interfacial nitrogen-rich layer Si-SiO2 interface.