A5075295516- Ion-surface interactions and analysis
- Atomic and Subatomic Physics Research
- Semiconductor materials and interfaces
- Particle accelerators and beam dynamics
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Semiconductor materials and devices
- Atomic and Molecular Physics
- Metal and Thin Film Mechanics
- Magnetic confinement fusion research
- Integrated Circuits and Semiconductor Failure Analysis
- Intermetallics and Advanced Alloy Properties
- Diamond and Carbon-based Materials Research
- Quantum optics and atomic interactions
- Molecular Junctions and Nanostructures
- Particle Accelerators and Free-Electron Lasers
- Quasicrystal Structures and Properties
- Mass Spectrometry Techniques and Applications
- Plasma Diagnostics and Applications
- Inorganic Chemistry and Materials
- Laser-induced spectroscopy and plasma
- Nuclear physics research studies
- Electron and X-Ray Spectroscopy Techniques
- Nuclear Physics and Applications
- Rare-earth and actinide compounds
nLIGHT (United States)
2022
Passport Systems (United States)
2010-2011
Michigan Technological University
1996-2007
Eon Corporation (United States)
2004-2006
Herzen University
2003
University of Iowa
2003
Los Alamos National Laboratory
1993-2002
Varian Medical Systems (United States)
2002
Ion Linac Systems (United States)
2002
Eaton (United States)
1999-2000
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTrinuclear Fe-M-S complexes containing a linear FeMFe array and bridging S2MS2 unit. Electronic structures crystal molecular of the [(C6H5)4P]2[Cl2FeS2MS2FeCl2] (M = Mo, W) complexesD. Coucouvanis, E. D. Simhon, P. Stremple, M. Ryan, Swenson, N. C. Baenziger, A. Simopoulos, V. Papaefthymiou, Kostikas, PetrouleasCite this: Inorg. Chem. 1984, 23, 6, 741–749Publication Date (Print):March 1, 1984Publication History Published online1 May 2002Published...
A merged-beams electron-energy-loss technique is described, by which absolute cross sections can be measured for near-threshold electron-impact excitation of multipy charged ions. Results are reported here total the ${\mathrm{O}}^{5+}$(2s\ensuremath{\rightarrow}2p) transition from below threshold to 1.6 eV above threshold. The experimental data in good agremeent with a seven-state close-coupling calculation throughout energy range experiment. agree calculations showing that more than 90%...
The use of high-power ${\mathrm{Ga}}_{1\mathrm{\ensuremath{-}}\mathit{x}}$${\mathrm{Al}}_{\mathit{x}}$As diode laser arrays for optical pumping Rb vapor has been examined both theoretically and experimentally. Our studies show that large atomic polarizations can be obtained using the broad spectral output a array if resonance line is collisionally broadened by several atmospheres buffer gas. objective was to study effectiveness as light sources optically pumped spin-exchange polarized...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMixed-valence coinage metal clusters with 1,1-thioperthio ligands. Syntheses and molecular structures of the copper gold [Cu4L3]2-, [Cu5L4]-, [AuCu4L4]- anions (L = 1,1-dicarbo-tert-butoxyethylene-2,2-thioperthiolate). A geometrically-locked, charge-separated valence state in [Cu5L4]- anionD. Coucouvanis, S. Kanodia, D. Swenson, J. Chen, T. Stuedemann, N. C. Baenziger, R. Pedelty, M. ChuCite this: Am. Chem. Soc. 1993, 115, 24,...
We have developed a real-time charged particle beam probe which can be used both as diagnostic (beam tuning) and to quantitatively determine the three-dimensional density distribution of beam. The consists microchannel plate, an aluminized phosphor screen deposited on fiber-optic faceplate, flexible bundle, charge injection device (CID) in tandem. Digital or analog video output CID is fed into computer oscilloscope, respectively, for analysis observation. moved continuously along beams’...
Absolute cross sections have been measured from below threshold to 1500 eV for electron-impact single ionization of chromium ions in initial charge states 6+, 7+, 8+, and 10+. The measurements utilized the Oak Ridge National Laboratory Electron Cyclotron Resonance ion source electron-ion crossed-beams apparatus. lowest three states, which 3${s}^{2}$3${p}^{n}$ ground-state electron configurations, all exhibit onsets at lower energies than expected ions, indicating presence metastable...
Spin exchange cross sections have been calculated for hydrogen atoms with energy in the keV range incident on or alkali-atom targets. The generally decrease increasing energy, but also show oscillations as a function of energy. For atom an 5 Na target, total spin is 1.2*10-15 cm2. effect collisions optically pumped polarised H- ion source analysed.
Absolute cross sections for ionization of the Na-like ions ${\mathrm{Ti}}^{11+}$ and ${\mathrm{Cr}}^{13+}$ due to electron impact have been measured over energy ranges 300--800 eV 500--1500 eV, respectively. These measurements confirm predictions by Griffin, Pindzola, Bottcher [Phys. Rev. A 36, 3642 (1987)] concerning magnitude indirect processes these ions.
Lasers are essential tools for a wide variety of materials processing applications. The speed, quality, and process window determined in part by the laser beam properties, including size, shape, divergence. Most sources have fixed characteristics, resulting material limitations nonoptimized performance. nLIGHT has developed fiber-laser product line that provides rapid tunability characteristics directly from delivery fiber using novel, all-fiber mechanism. broad range sizes shapes real-time...
Phase equilibria were investigated in the Ga–Ni–As ternary system, with particular emphasis on regions of technological importance to Ni/GaAs electrical contacts. A 600 °C Gibbs isotherm was constructed using x-ray-diffraction analysis and electron probe microanalysis annealed samples. Additionally, three isopleths (NiAs–GaAs, NiGa–NiAs, NiGa–GaAs) a partial liquidus projection established differential thermal metallography. These data utilized clarify some discrepancies literature...
We have measured the analyzing power ${\mathit{A}}_{\mathit{N}\mathit{O}}$ and spin transfer ${\mathit{K}}_{\mathit{N}\mathit{N}}$ for np-elastic scattering from about 60\ifmmode^\circ\else\textdegree\fi{} to 170\ifmmode^\circ\else\textdegree\fi{} c.m. at 485, 635, 788 MeV. The new data clarify previous discrepancies complete first-order determination of nucleon-nucleon elastic these energies.
Using sputter-deposited PtIn2 films as metallizations, it is demonstrated that the recently identified exchange mechanism may be utilized to form ohmic contacts n-GaAs. Specific contact resistances low 3.0×10−6 Ω cm2 are obtained upon annealing in temperature range of 800–850 °C. Contacts processed under optimum conditions show little degradation electrical properties after 100 h thermal aging at 400 or 500 Auger depth profiles as-deposited and annealed samples consistent with hypothesis an...