A5110247458- Particle accelerators and beam dynamics
- Particle Accelerators and Free-Electron Lasers
- Nuclear physics research studies
- Superconducting Materials and Applications
- Nuclear Physics and Applications
- Magnetic confinement fusion research
- Advanced NMR Techniques and Applications
- Inorganic Fluorides and Related Compounds
- Metal and Thin Film Mechanics
- X-ray Spectroscopy and Fluorescence Analysis
- Integrated Circuits and Semiconductor Failure Analysis
- Ion-surface interactions and analysis
- Radiopharmaceutical Chemistry and Applications
- Silicon and Solar Cell Technologies
- Catalysis and Oxidation Reactions
- Plasma Diagnostics and Applications
- Boron Compounds in Chemistry
- Astro and Planetary Science
- Rare-earth and actinide compounds
- Atomic and Subatomic Physics Research
- Gyrotron and Vacuum Electronics Research
- Atomic and Molecular Physics
- Advanced Chemical Physics Studies
- Quantum Chromodynamics and Particle Interactions
- Cell Image Analysis Techniques
AstraZeneca (Poland)
2024
Brookhaven National Laboratory
1973-2008
RIKEN BNL Research Center
2006
Indiana University Bloomington
1999
Lockheed Martin (United States)
1995
General Electric (United States)
1978-1979
Veeco (United States)
1979
Rutgers, The State University of New Jersey
1971-1972
Argonne National Laboratory
1967-1970
The ($d, p$) reactions on ${\mathrm{Ba}}^{130,132,134,136,138}$ have been investigated with 12.0-MeV deuterons from the Argonne Tandem Van de Graaff accelerator. Proton spectra were recorded in a broad-range magnetic spectrograph. Many new levels observed. ground-state $Q$ values (in MeV) for (including odd-$A$ targets) are found to be 5.269 $A=130, 4.977$ $A=132, 4.746$ $A=134, 6.886$ $A=135, 4.680$ $A=136, 6.398$ $A=137, \mathrm{and} 2.493$ $A=138$. angular distributions measured states up...
A new experimental technique was used to measure Coulomb displacement energies $\ensuremath{\Delta}{E}_{c}$ in the Ca-Sc isobaric pairs with $A=44, 46, 48, \mathrm{and} 50$. The reaction ${\mathrm{Ca}}^{46}({\mathrm{He}}^{3}, d){\mathrm{Sc}}^{47}$ this quantity for $A=47$. This permits analysis of all from $A=41 \mathrm{to} 50$, ground states and several excited states, which yields a consistent picture.
Neutron particle-hole states in ${\mathrm{Ba}}^{138}$ have been observed three different reactions: from the decay of isobaric analog resonances formed by reaction ${\mathrm{Ba}}^{138}$+$p$, ${\mathrm{Ba}}^{137}(d, p){\mathrm{Ba}}^{138}$, and as proton scattering ${\mathrm{Ba}}^{137}$. It is thus possible to make reasonable assignments spin parity well determine shell-model configurations many these states.
A 9\ifmmode^\circ\else\textdegree\fi{} solenoidal spin rotator or 5% partial Siberian Snake was used to successfully accelerate polarized protons for the first time 10.8 GeV kinetic energy in Brookhaven Alternating Gradient Synchrotron with depolarization due intrinsic resonance crossing. It found that a snake can effectively overcome 18 imperfection resonances this range. We also observed an interference between flip induced by and linear coupling solenoid field of snake.
A coherent spin resonance excited by an rf dipole was used to overcome depolarization due intrinsic resonances at the Alternating Gradient Synchrotron (AGS) Brookhaven National Laboratory. We found that our data are consistent with a full flip of polarized proton beam, without emittance growth, $G\ensuremath{\gamma}\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}12+{\ensuremath{\nu}}_{z}$ and $36\ensuremath{-}{\ensuremath{\nu}}_{z}$, adiabatically exciting vertical betatron oscillation...
With barium isotopes of mass 130, 132, 134, 136, and 138 as targets, proton elastic scattering excitation functions have been obtained at several angles. In the energy range 7.0-12.0 MeV, we observed resonances which correspond to isobaric analogs low-lying states target-plus-neutron systems. The resonance data analyzed extract widths, total energies. Spectroscopic factors extracted by comparing measured widths with single-particle calculated on basis a shell-model description analog state....
Differential cross sections of the ${\mathrm{B}}^{11}({\mathrm{He}}^{3}, \ensuremath{\alpha}){\mathrm{B}}^{10}$ reaction leading to seven states up 5.2-MeV excitation energy have been measured at forward angles an incident $E({\mathrm{He}}^{3})=33$ MeV. The angular distributions analyzed in terms distorted-wave Born approximation on assumption that direct neutron-pickup process is predominant. Relative spectroscopic factors extracted and are found be good agreement with Cohen Kurath's...
The ${\mathrm{Ca}}^{48}({\mathrm{He}}^{3}, t){\mathrm{Sc}}^{48}$ reaction was studied with a magnetic spectrograph at bombarding energy of 15 MeV. Energy levels ${\mathrm{Sc}}^{48}$ were obtained and compared the results previous work. From consideration cross sections, angular distributions, spin parity assignments, eight are tentatively assigned to ($\ensuremath{\pi}{{f}_{\frac{7}{2}}}^{1}$) ($\ensuremath{\nu}{{f}_{\frac{7}{2}}}^{\ensuremath{-}1}$) configuration---namely, those...
The mean lives of the second and third excited states in $^{40}\mathrm{K}$ are (0.65 \ifmmode\pm\else\textpm\fi{} 0.15) \ifmmode\times\else\texttimes\fi{} ${10}^{\ensuremath{-}12}$ (1.6 0.3) sec, respectively. relative speeds three $M1$ transitions between four lowest incompatible with these being pure ${(\ensuremath{\pi}{d}_{\frac{3}{2}})}^{\ensuremath{-}1}\ifmmode\times\else\texttimes\fi{}(\ensuremath{\nu}{f}_{\frac{7}{2}})$-even if effective moments used; neither small components most...
The attenuated-Doppler-shift technique has been used to determine the mean life of 1.059-MeV third excited state in ${\mathrm{Al}}^{26}$ be (${3.1}_{\ensuremath{-}0.8}^{+1.1}$)\ifmmode\times\else\texttimes\fi{}${10}^{\ensuremath{-}14}$ sec. decays primarily ${J}^{\ensuremath{\pi}}={0}^{+}$, $T=1$, 0.229-MeV first state. spin component this pure $M1$ transition can deduced from analogous Gamow-Teller $\ensuremath{\beta}$ decay ${\mathrm{Si}}^{26}$ ground ${\mathrm{Al}}^{26}$. observed...
The synthesis, separation, and structural assignments of some cis- trans-4-substituted derivatives 2-phenyl-1,3-dioxolan are described. Some the were based on n.m.r. correlations; general utility such methods is discussed. trans-4-Methoxycarbonyl-2-methyl-1,3-dioxolan more stable than cis-isomer, unlike 2,4-dimethyl-1,3-dioxolan, cis-isomer which preferred.
We report progress on the R&D program for electron-cooling of Relativistic Heavy Ion Collider (RHIC). This electron cooler is designed to cool 100 GeV/nucleon at storage energy using 54 MeV electrons. The source will be a superconducting RF photocathode gun. accelerator recovery linac. frequency set 703.75 MHz. maximum bunch 9.38 MHz, with charge 20 nC. has following components: photoinjector and its photocathode, linac cavity, start-to-end beam dynamics magnetized electrons, cooling...
Next generation light-sources, electron coolers, high-power FELs, Compton X-ray sources and many other accelerators were made possible by the emerging technology of high-power, high-brightness beams. In order to get anticipated performance level ampere-class currents, technological barriers are yet be broken. BNL's Collider-Accelerator Department is pursuing some these technologies for its cooling RHIC application, as well a future electron-hadron collider. We will describe work on CW,...
We present the design and parameters of an energy recovery linac (ERL) facility, which is under construction in Collider-Accelerator Department at BNL. This R&D facility has goal demonstrating CW operation ERL with average beam current range 0.1 - 1 ampere very high efficiency recovery. The possibility a future upgrade to two-pass also being considered. heart 5-cell 703.75 MHz super-conducting RF strong Higher Order Mode (HOM) damping. flexible lattice provides test-bed for exploring issues...
The 'Ether Pac' and 'Fluo temperature compensated vaporizers have been evaluated in the laboratory 'field'. Rigorous testing has demonstrated that these are robust reliable. Shaking, tilting overturning do not significantly affect their performance. Both deliver lower concentrations of vapour than setting on at low tidal volumes (100 ml). vaporizer output declines progressively with ambient temperatures below 23 degrees C a similar result occurs 20 C. Clinical trials Nepal, Kenya, Burma UK...
A new type of spin depolarization resonance has been observed at the Brookhaven Alternating Gradient Synchrotron (AGS). This is identified as a strong closed-orbit sideband around dominant intrinsic resonance. The strength was proportional to 9th harmonic component horizontal closed orbit and vertical betatron oscillation amplitude. "hybrid" cannot be overcome by partial snake AGS, but it can corrected correctors.
A system applied to clinical microbiology was adapted for the high throughput assessment of environmental monitoring plates collected from a parenteral manufacturing site. Proof concept and industrialization instrument necessary ensure robust counting where false negatives results could not be tolerated. Here we describe side-by-side comparison compared side by qualified microbiologists in routine use over multiple months.
An ion source of the Freeman type has been extensively reworked and tailored for routine production dopant species on PR-30 implantation machine. The modified is presently used several such machines within Bell System, routinely producing intense beams B+, P+, As+, Sb+. Typical target currents above are 1, 5, 6, 5 mA, respectively, with peak about 20% higher than these figures. With possible exception beam current intensities highest available applications. Further studies improved B+ being...