P. Rothschild
A5072561978- High-Energy Particle Collisions Research
- Particle physics theoretical and experimental studies
- Quantum Chromodynamics and Particle Interactions
- X-ray Spectroscopy and Fluorescence Analysis
- Nuclear Physics and Applications
- Ion-surface interactions and analysis
- Advanced X-ray and CT Imaging
- Nuclear physics research studies
- Radiation Dose and Imaging
- Electron and X-Ray Spectroscopy Techniques
- Radiation Shielding Materials Analysis
- Superconducting Materials and Applications
- Nuclear reactor physics and engineering
- Digital Radiography and Breast Imaging
- Neutrino Physics Research
- Magnetic confinement fusion research
- Particle Accelerators and Free-Electron Lasers
- Radiology practices and education
- Silicon and Solar Cell Technologies
- Astrophysics and Cosmic Phenomena
- Statistical Methods and Bayesian Inference
- Medical Imaging Techniques and Applications
- Atomic and Molecular Physics
- Radiomics and Machine Learning in Medical Imaging
- Graphite, nuclear technology, radiation studies
Massachusetts Institute of Technology
1990-2002
University of California, Riverside
1992
Brookhaven National Laboratory
1992
Australian National University
1986
Charged kaon production has been measured in Si+Al and Si+Au collisions at 14.6 A GeV/c, Au+Au 11.1 GeV/c by Experiments 859 866 (the E--802 Collaboration) the BNL AGS. Invariant transverse mass spectra rapidity distributions for both K+ K- are presented. The centrality dependence of rapidity-integrated yields is studied. Strangeness enhancement observed as an increase slope yield with total number participants well per participant. starts peripheral (relative to N+N) appears saturate a...
Two-pion correlation functions are analyzed at mid-rapidity for three systems (14.6 A-GeV Si+Al, Si+Au, and 11.6 Au+Au), seven distinct centrality conditions, different kT bins in the range 0.1--0.5 GeV/c. Source reference frames determined from fits to Yano-Koonin source parameterization. Bertsch-Pratt radius parameters shown scale linearly with both number of projectile total participants as obtained a Glauber model calculation. A finite emission duration that increases system/centrality...
The E-802 spectrometer at the Brookhaven Alternating Gradient Synchrotron, enhanced by a trigger for selection of events with one or more specified particles, has been used to measure momentum-space correlation between pairs ${\mathit{K}}^{+}$'s emitted in central Si+Au collisions 14.6 A GeV/c. This projected onto Lorentz-invariant relative four-momentum axis. Fits this function yield size kaon source that is comparable found using ${\mathrm{\ensuremath{\pi}}}^{+}$ from similar rapidity...
Production of the φ meson in central Si+Au collisions has been measured by E859 at Brookhaven Alternating Gradient Synchrotron selecting events with identified K+K− pairs. The mass and width φ, obtained from invariant distribution kaon pairs, are consistent those free mesons. transverse rapidity distributions presented. inverse slope parameter for an exponential fit to is 179±10±17MeV.Received 13 October 1995DOI:https://doi.org/10.1103/PhysRevLett.76.2021©1996 American Physical Society
This paper presents recent results from Experiment 859 at the BNL AGS, focussing on strangeness (K±, Λ, Λ), rare probes (p, φ) and two-particle correlations. Highlights of include an analysis centrality dependence K± yields in terms number participants, a brief review current status E859 Λ data, target p pK− ratio's, re-analysis feed-down contamination p's, comparison cenal SiAu pp φ through φK− ratio, extremely preliminary study line-shape, summary two-π correlation source sizes,...
The static electric quadrupole moment Q${(2}_{1}^{+}$) of the first excited state $^{136}\mathrm{Ba}$ and reduced transition probability B(E${2;0}_{1}^{+}$\ensuremath{\rightarrow}${2}_{1}^{+}$) have been measured using reorientation effect in Coulomb excitation. It is found that Q${(2}_{1}^{+}$)=-0.19\ifmmode\pm\else\textpm\fi{}0.06 (+0.07\ifmmode\pm\else\textpm\fi{}0.07) e b =0.419\ifmmode\pm\else\textpm\fi{}0.004 (0.417\ifmmode\pm\else\textpm\fi{}0.004) ${e}^{2}$${\mathrm{b}}^{2}$ for...
In previous work, the E802 Collaboration at BNL-AGS used negative binomial distribution (NBD) fits to charged particle multiplicity distributions from central collisions of ${}^{16}$O+Cu $14.6A$ GeV/$c$ derive two-particle short-range rapidity correlation length and strength. These turned out be much shorter weaker than values for hadron collisions, which led a simple elegant explanation intermittency. present direct measurement identified pions in E802/E859 magnetic spectrometer is...
A new intermediate energy x-ray source is described which uses a cw electron linear accelerator created specifically for this application. This has been installed in the hub of hollow-spoked rotation wheel to form scanning beam x-rays. As cargo transported through inspection tunnel at speeds up 6 inches per second it raster-scanned by digital images backscattered as well transmitted The system will be detail, and sample heavily loaded 8 foot wide ISO container presented. Environmental...
Motivated by the use of X-rays for security screening, we demonstrate utility fusing energy-resolved observations scattered photons with traditional attenuation data joint recovery electron density and photoelectric coefficient in context limited-view tomographic imaging scenarios. We begin developing a physical associated numerical model scatter physics used within our processing. With this model, paper, propose variational approach recovering two material properties. In addition to typical...
Work release details at prisons have been a continuing source of inspection problems for prison wardens. At the Montana State Prison in deer Lodge 400 prisoners leave morning to work outside walls. They return lunch and again evening. Past practice has do 100% pat search selective strip searches. These procedures are an irritant both personnel involved. However, they were felt be essential based on quantity contraband materials being brought into by these inmates. BodySearch is x-ray...
A modular 2 MeV Shaped Energy™ system complemented with two 220 keV scanning pencil beam systems is described. With the x-ray beams providing backscatter imaging, this multi-source has excellent detection capabilities, low radiation dose, and a small footprint for inspecting air cargo containers in crowded airport environment. Its design based on prototype inspection 3.5 Energy source segmented transmission detector 450 systems. This higher energy was designed very high density such as fully...