A5005352991- Nuclear Physics and Applications
- Nuclear reactor physics and engineering
- Nuclear Materials and Properties
- Silicon and Solar Cell Technologies
- Particle physics theoretical and experimental studies
- Magnetic confinement fusion research
- Fusion materials and technologies
- High-Energy Particle Collisions Research
- Laser-Plasma Interactions and Diagnostics
- Quantum Chromodynamics and Particle Interactions
- Thin-Film Transistor Technologies
- Nuclear and radioactivity studies
- solar cell performance optimization
- Nuclear physics research studies
- Mass Spectrometry Techniques and Applications
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Plasma Diagnostics and Applications
- Isotope Analysis in Ecology
- Particle accelerators and beam dynamics
- Laser-induced spectroscopy and plasma
- Particle Detector Development and Performance
- Superconducting Materials and Applications
- Advanced X-ray Imaging Techniques
- Analog and Mixed-Signal Circuit Design
University of California, San Diego
2022-2025
Johns Hopkins Medicine
2022
Johns Hopkins University
2022
Oak Ridge National Laboratory
2006-2020
Borregaard (Norway)
2018
Lawrence Livermore National Laboratory
1990-2011
Princeton Plasma Physics Laboratory
1999-2011
Office of Scientific and Technical Information
2009
National Technical Information Service
2009
Georgia Institute of Technology
2003-2005
We measured the differential inelastic cross section $\frac{E{d}^{3}\ensuremath{\sigma}}{d{P}^{3}}$ for very high-energy proton-proton collisions at CERN intersecting storage rings. studied these inclusive sections reactions of type $p+p\ensuremath{\rightarrow}{\ensuremath{\pi}}^{+}+\mathrm{anything}$ and $p+p\ensuremath{\rightarrow}p+\mathrm{anything}$ energies equivalent to a lab energy 500-1500 GeV. found that in our kinematic range was equal its value accelerator energies, both shape...
The availability of future fusion devices, such as a nuclear science facility or demonstration power station, greatly depends on long operating lifetimes plasma facing components in their divertors. ORNL is designing the Material Plasma Exposure eXperiment (MPEX), superconducting magnet, steady-state device to address material interactions reactors. MPEX will utilize new highintensity source concept based RF technology. This allow experiment cover entire expected conditions divertor reactor....
A long-term goal of inertial-confinement fusion research is the generation energy by imploding capsules containing deuterium-tritium fuel. Progress in designing aided accurate imaging burn. Penumbral coded-aperture techniques have been used to obtain neutron images that are a direct measurement burn region capsules.
Linear plasma generators are cost effective facilities to simulate divertor conditions of present and future fusion reactors. They used address important R&D gaps in the science material interactions towards viable facing components for Next generation have be able access expected on targets ITER devices. The steady-state linear device MPEX will this regime with electron temperatures 1–10 eV densities . resulting heat fluxes about 10 MW is designed deliver those a novel Radio Frequency...
Neurocognitive (NC) impairment in people with HIV (PWH) is associated erythrocyte indices, which may serve as indicators of iron metabolism, inflammation, and related factors. Erythropoiesis requires iron, regulated by a multifaceted system peptide hormones, including hepcidin. This study postulated that hepcidin might modify the relationship between indices NC performance PWH. Plasma were quantified 88 virally-suppressed PWH who underwent comprehensive assessments. Global was summarized...
Objective: Examine the association between markers of inflammation in cerebrospinal fluid (CSF) and neurocognitive impairment (NCI) among diverse persons with HIV (PWH). Background: Latino PWH are at higher risk for NCI than non-Latino White (NLW). Evidence can be racial ethnic minority has been linked to NCI. Methods: We performed a retrospective cross-sectional analysis 363 who identified as Latinos or NLW. Neurocognitive performance was measured by comprehensive battery. A focused panel...
A video camera system has been installed on the DIII-D tokamak for two-dimensional spatial studies of line emission in lower divertor region. The views tangentially at approximately height X point through an outer port. At tangency plane, entire from inner wall to outside bias ring is viewed with resolution ∼1 cm. image contains information ∼90 deg toroidal angle. In a recent upgrade, remotely controllable filter changers were added which have produced images nominally identical discharges...
The preparation and d.c. electroluminescent properties of two types powder phosphor are described. first type is prepared by a slurrying technique in which the activators added to pre-fired ZnS (post activation), second involves addition during precipitation (simultaneous activation). Both may subsequently be copper coated give high-brightness panels, exhibit an electrochemical forming process. measurement absolute luminance efficiency described detail relationships between characteristics...
Images of the neutron-emitting region high-yield inertial confinement fusion targets have been obtained with a penumbral coded-aperture imaging system. The major components system are aperture, neutron detector, alignment hardware, and image reconstruction software. We describe these present an example results.
A review is made of the characteristics direct-current electroluminescent (dc EL) displays based on powders zinc sulfide doped with manganese and copper. These panels show yellow emission efficiency about 0.1 percent watt per can be operated under both continuous pulsed operation. The preparation described brightness-voltage-current relationships are given. Under operation, brightness at 100 V falls from fL to 50 in several thousand hours, while operation little deterioration noted this...
DIII-D currently operates with a single- or double-null open divertor and graphite walls. Active particle control cryopump has demonstrated density control, efficient helium exhaust, reduction of the inventory particles in wall. Gas puffing D2 impurities peak heat flux by factors 3-5 radiation. A combination active cryopumping feedback-controlled gas produced similar control. Experiments neon have shown that radiation is equally-divided between localized zone near X-point mantle around...
In this paper, we propose a real-time noise suppression system implemented with analog VLSI. The algorithm is designed to reduce stationary background while preserving the non-stationary signal component. Because relies on computation rather than digital, it has benefits such as extremely low power consumption and computation. based digital processing foundations that are slightly adjusted for use in continuous-time domain. components described part of include C/sup 4/ second-order section...
Fast beam-ion losses were studied in DIII-D the presence of a scaled mock-up two test blanket modules (TBM) for ITER. Heating protective tiles on front TBM surface was found when neutral beams injected and fields engaged. The fast-ion core confinement not significantly affected. Different orbit-following codes predict formation hot spot arising from beam ions deposited near edge plasma. are good agreement with each other total power at spot, predicting an increase decreasing separation...
A terrorist attack using an improvised nuclear device is one of the most serious dangers facing United States. The work presented here part effort to improve deterrence by developing a methodology attribute weapons-grade plutonium source reactor measuring intrinsic physical characteristics interdicted plutonium. In order demonstrate developed methodology, samples were produced from depleted uranium dioxide (DUO2) surrogates irradiated in fast-neutron environment. replicate neutron flux...
A camera has been developed that directly measures the deuterium-tritium burn region of laser-driven inertial confinement fusion targets. Images are formed by 14-MeV thermonuclear neutrons emitted from Our demonstration instrument is based on a coded-aperture imaging technique known as penumbral imaging, and produced images high-yield (> 10 12 neutrons) direct-drive targets with resolutions 80 μm. The consists four major components: aperture, alignment hardware, detector system, image...