A5082079150- Laser-Plasma Interactions and Diagnostics
- Semiconductor materials and devices
- Laser-induced spectroscopy and plasma
- Ionosphere and magnetosphere dynamics
- Atomic and Molecular Physics
- Advancements in Semiconductor Devices and Circuit Design
- Advanced X-ray Imaging Techniques
- Medical Imaging Techniques and Applications
- Earthquake Detection and Analysis
- Nuclear Physics and Applications
- Advanced X-ray and CT Imaging
- X-ray Spectroscopy and Fluorescence Analysis
- Plasma Diagnostics and Applications
- Magnetic confinement fusion research
- Silicon Carbide Semiconductor Technologies
- GNSS positioning and interference
- Magnetic Properties and Applications
- Laser-Matter Interactions and Applications
- Irrigation Practices and Water Management
- Seismic Waves and Analysis
- Silicon Nanostructures and Photoluminescence
- Behavioral and Psychological Studies
- Integrated Circuits and Semiconductor Failure Analysis
- Solar and Space Plasma Dynamics
- Astro and Planetary Science
McMaster University
1986-2019
United States Military Academy
2017
Lawrence Berkeley National Laboratory
2017
University of California, Berkeley
2000-2016
Thar Energy (United States)
2014
University of Nebraska–Lincoln
2013
United States Naval Research Laboratory
1995-2011
Naval Research Laboratory Plasma Physics Division
1992-2009
Kingston University
2008
Richard Wolf (Germany)
2008
For pt.I see ibid., vol.13, p.441 (1983). The magnetic phase diagram for CrFe alloys was determined by neutron scattering and low-field magnetisation. Two critical concentrations were found as the state of order evolved from itinerant antiferromagnetism Fe less than cA=16.0+or-0.5% to ferromagnetism greater cF=19.0+or-0.5%. Spin-glass behaviour observed between two concentrations. onset studied small-angle scattering. Analysis concentration temperature dependence correlation range below cF...
The design of a diode laser frequency stabilization system using the Zeeman effect is described. Various regimes operation are analyzed Jones matrix approach. different from original Joint Institute for Laboratory Astrophysics in that magnetic fields fully contained and thus it can be used proximity magnetically sensitive instruments.
It has been found that certain n-channel MOSFET's fabricated on silicon-on-insulator (SOI) substrates formed by oxygen implantation can have <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">\log (I_{d}): V_{gs}</tex> , characteristics with very steep slopes in the subthreshold region. In contradiction to normal models for short-channel transistors bulk silicon, slope becomes steeper shorter gate lengths or higher drain voltages. This effect is...
The performance and the physical properties of SIMOX (separation by implantation oxygen) MOS transistors are studied from room to liquid helium temperatures with particular emphasis on behavior carrier mobility, threshold voltage, subthreshold swing, leakage current, kink effect. Various substrates, such as partially depleted films annealed at low or high temperature ultrathin (100 nm), analyzed compared. Enhancement- depletion-mode devices different doping levels, channel lengths,...
General equations for the continuous length and initial drop size of turbulent jets water discharged from smooth pile exits orifices were developed by dimensional analysis. Experimental results using photographic technique confirmed validity these showed that jet is related directly to Weber number fully flow. Comparison with laminar flow indicate Weber's equation can be modified describe breakup distance a jet, but use eddy viscosity instead molecular incorrect. Mean equivalent size,...
Abstract This study describes an extension of Kazdin's work on acceptability behavior therapy methods to the assessment in developing field behavioral staff management. An instrument for assessing management techniques was developed and then used assess evaluations four that have been researched literature (instruction, reinforcement, punishment, self‐management). The effects problem difficulty duration supervisor‐staff interaction were also investigated. Staff identified as having differing...
An experimental study has been conducted on the characteristics of propagation mid‐latitude Pc 1 micropulsations using a five‐station receiving network stretching from New York to Florida and Maryland Illinois. All data were telemetered in real time over telephone lines for centralized recording analysis. Cross‐correlation techniques used determine group velocity direction arrival three different computational methods. Amplitude, spectral, polarization are presented analyzed. It was found...
It is demonstrated that well-defined buried layers of β-SiC can be grown epitaxially within a silicon substrate. This structure formed by implanting high doses carbon ions (&gt;3×1017 C+ cm−2) at 200 keV into (100) single-crystal which maintained temperature approximately 550 °C. During the subsequent anneal 1405 °C for 90 min redistribution implanted species occurs, enabling formation layer overlain high-quality (χmin=4.1%).
Detailed materials properties of silicon on insulator films produced by dual electron‐beam recrystallization polysilicon are reported. By scanning a line electron beam parallel to the edges an array narrow seeding windows, large areas (several square centimeters) precisely oriented single‐crystal have been formed. The optimum conditions and substrate geometry achieve best investigated, it has found that using fast scan speed (∼ 35 cm/s) allows seeded regrowth without melting below isolating...
The antiferromagnetic defect scattering from a 10 at.% gamma -MnCu alloy and -MnPd has been measured at 4.2K using polarisation analysis. magnetic defects in MnCu are largely on first neighbours, but for MnPd the disturbance is greatest second neighbours. Within +or-0.2 mu B there appears to be no moment impurity site both cases. In fitting polycrystalline results with cubic defect, d /dc=-4.3+or-0.6 B/at +3.1+or-0.3 have calculated intensity (001) position. These numbers agree /dc obtained...
The ferromagnetic-core type of solenoid that is used as a trailed antenna for communications reception by submarines has not demonstrated adquate sensitivity to satisfy the performance requirements deeply submerged receiving extremely low frequency (ELF) transmissions from planned Sanguine system. It possible, however, superconducting quantum interference device (SQUID) can be adapted this role successfully and permit all platform depth, speed, maneuverability met. present status SQUID's...
A series of lunar radio-reflection experiments has been conducted at the Naval Research Laboratory over a wavelength span between 11 and 22 meters. The measurements made during this first monostatic pulsed radar study moon decameter wavelengths suggest that dependence exists in scattering properties surface. Radar cross-section are reported for several wavelengths, composite echo representing integrated contributions hundred individual echoes is presented. These extend to hypothesis radio...
In this paper we describe a regularization approach to diffraction enhanced tomography. This represents an improvement over methods based on geometrical optics approximation. Reconstructed images of the attenuation coefficients and refractive indices computer generated phantoms are presented. An experimental scheme is also discussed, which utilizes first-generation tomography set-up, in conjunction with analyser crystal.
To describe the relationships between acceptance of disability, attitudes towards quality life, functional ability, community integration, and demographic markers, in individuals with acquired brain injuries.Forty subjects completed four self-report instruments, including Attitudes Towards Persons Disabilities Scale O-Version, Acceptance Disability Scale, Rand-36 Health Status Inventory, Community Integration Questionnaire. An observer Functional Independence Measure Assessment as a measure...
A self-consistent, completely-quantum-mechanical formalism has been developed that characterizes the fundamental atomic properties of ions in dense plasmas. This theory is applied to neon plasmas under strongly coupled conditions and results are compared with those obtained from hypernetted-chain approximation employing a semiclassical two-body interaction. The comparisons point out lack validity simple approximations for calculations indicate self-consistent provides method obtaining...
The nuclear and magnetic diffuse neutron scattering cross sections at 4.2K of a 4.7 at.% CuMn single crystal have been measured along the (100), (110), (210) directions using polarisation analysis. corrected for spin incoherent by similar measurement on natural copper crystal. alloy is shown to be atomically random and, assuming g=2, electronic per Mn atom S=1.77+or-0.05. first-neighbour correlation ferromagnetic.