A5084052054- Nuclear Physics and Applications
- Reproductive biology and impacts on aquatic species
- Nuclear physics research studies
- Intermetallics and Advanced Alloy Properties
- Genetic and Clinical Aspects of Sex Determination and Chromosomal Abnormalities
- High Entropy Alloys Studies
- High-Temperature Coating Behaviors
- Radiation Detection and Scintillator Technologies
- Fusion materials and technologies
- Radiation Therapy and Dosimetry
- Reproductive Physiology in Livestock
- X-ray Diffraction in Crystallography
- Crystallography and molecular interactions
- Nuclear reactor physics and engineering
- Advanced ceramic materials synthesis
- High-Energy Particle Collisions Research
- Crystallization and Solubility Studies
- Radioactivity and Radon Measurements
- Electrophoretic Deposition in Materials Science
- Radioactive Decay and Measurement Techniques
- Metal Alloys Wear and Properties
- Radiation Effects and Dosimetry
- Inorganic Chemistry and Materials
- Quantum Chromodynamics and Particle Interactions
- Rare-earth and actinide compounds
University of Oxford
2022-2024
Michigan State University
1990-2006
Michigan Department of Natural Resources
2004-2006
National Superconducting Cyclotron Laboratory
1990-1994
In this study, we have investigated the microstructure and mechanical properties of two refractory high entropy alloys (RHEAs), Ti-V-Cr5-Nb-Ta Ti-V-Cr-Nb-Ta, in their as-cast heat-treated conditions. Both show almost single-phase BCC structure, while different size volume fraction secondary phases were formed after homogenisation heat treatment. The major phase was indexed as a complex C15 Laves structure with composition (Ti, Ta)(V, Cr, Nb)2. nanoindentation mapping indicates is very hard...
Azimuthal distributions of fragments with respect to the reaction plane are studied in Ar+V system as a function beam energy. Light charged particles found exhibit an enhanced emission which increases mass detected particle. As energy is increased, asymmetry decreases. Possible mechanisms behind asymmetry, such rotational collective motion and directed transverse momentum, discussed.
Silicon carbide fibre reinforced silicon matrix composite (SiC/SiC) is a key structural material for fusion reactors to allow high temperature operation of liquid lithium breeder blankets. This research investigated the corrosion behaviour two SiC/SiC composites (using Tyranno SA3 and SA4 fibres) immersed in static at 600°C 100 hours. Utilizing immersion tests advanced microstructural analysis, study reveals considerable composites, particularly local areas enriched with residual carbon or...
Energy spectra and angular distributions have been measured for high energy gamma rays (${\mathit{E}}_{\ensuremath{\gamma}}$\ensuremath{\ge}20 MeV) from proton-nucleus reactions at 104, 145, 195 MeV on targets of C, Zn, Pb. Gamma were observed with energies up to 170 MeV. The showed differences the typical exponential shape that is in ray production heavy-ion reactions. distribution forward peaked laboratory, which consistent emission a moving source. A comparison made previous measurements...
The sterile male release technique (SMRT) is currently used as part of an integrated effort to control Great Lakes populations sea lampreys Petromyzon marinus, yet the effects chemosterilization on reproductive endocrinology lamprey are unknown. Male were chemosterilized with bisazir (P, P-bis(1-aziridinyl)-N-methylphosphinothioic amide) and given timed-release implants containing d-Arg(6)-GnRH I (where GnRH acronym for gonadotropin-releasing hormone) III. endocrine system evaluated by...
Previous measurements of the half-life $^{32}\mathrm{Si}$, which is produced by cosmic-ray spallation $^{40}\mathrm{Ar}$ and interest for geophysical dating, display large discrepancies. We present a new method this other isotopes. Two samples containing 6.7\ifmmode\times\else\texttimes\fi{}${10}^{8}$ 7.4\ifmmode\times\else\texttimes\fi{}${10}^{8}$ $^{32}\mathrm{Si}$ nuclei, respectively, were prepared implantation separated projectile fragments. The was calculated from two independent...
Energy spectra and angular distributions have been measured for high energy gamma rays (${\mathit{E}}_{\ensuremath{\gamma}}$\ensuremath{\ge}20 MeV) from the p+d reaction at 145 195 MeV. Gamma were observed up to maximum allowed by kinematics. A comparison is made with previous measurements system 140, 197, 200 Below free pn\ensuremath{\gamma} threshold general shape of are in reasonable agreement a recent calculation elementary process. However, magnitude predicted cross section not good...
The Ta-Ru binary phase diagram has not been fully investigated, but shows potential for a two-phase region of A2 + B2. Given the high melting points both Ta and Ru, such an alloy would have temperature strength. A Ta72Ru28 was arc melted investigated in as-cast aged (at 1000 °C) states. as cast composed B2, albeit superalloy-like morphology. third found alloy, which reported before, is also coherent superlattice BCC matrix. structure this to be consistent with tetragonal Cr2Al prototype...
Silicon carbide fibre reinforced silicon matrix composites (SiC/SiC) are potentially a key candidate structural material for fusion reactors to allow high temperature operation of liquid lithium breeder blankets. This research investigated the corrosion behaviour two SiC/SiC (using Tyranno SA3 and SA4 fibres) immersed in static at 600 °C 100 hours. Using advanced microstructural analysis, study reveals considerable these composites, particularly areas enriched with residual carbon or oxygen....
The Ta-Ru binary phase diagram has not been fully investigated, but shows potential for a two-phase region of A2+B2. Given the high melting points both Ta and Ru, such an alloy would have temperature strength. A 72 Ru 28 was arc melted investigated in as-cast aged (at 1000 °C) states. as cast composed A2 B2, albeit superalloy-like morphology. third found alloy, which reported before, is also coherent superlattice BCC matrix. structure this to be consistent with tetragonal Cr 2 Al prototype...