A5066753701- Nuclear physics research studies
- Nuclear Physics and Applications
- Atomic and Subatomic Physics Research
- Particle physics theoretical and experimental studies
- Neutrino Physics Research
- Astronomical and nuclear sciences
- Atomic and Molecular Physics
- Particle accelerators and beam dynamics
- Mass Spectrometry Techniques and Applications
- Particle Accelerators and Free-Electron Lasers
- Superconducting Materials and Applications
- Advanced NMR Techniques and Applications
- Ion-surface interactions and analysis
- Nuclear reactor physics and engineering
- earthquake and tectonic studies
- Astro and Planetary Science
- Quantum Chromodynamics and Particle Interactions
- Radioactive Decay and Measurement Techniques
- Scientific Research and Discoveries
- Geological formations and processes
- Electromagnetic Launch and Propulsion Technology
- Muon and positron interactions and applications
- Advanced X-ray Imaging Techniques
- Laser-induced spectroscopy and plasma
- Transport and Economic Policies
Cardiff University
2024-2025
Louisiana State University
2017-2024
Argonne National Laboratory
2015-2024
University of Manitoba
2013-2023
Northwestern University
2023
Financial Research Institute of the Ministry of Finance of the Russian Federation
2013
Brookhaven College
1994
The Canadian Penning Trap mass spectrometer has made measurements of 33 neutron-rich nuclides provided by the new Californium Rare Isotope Breeder Upgrade facility at Argonne National Laboratory. studied region includes $^{132}\mathrm{Sn}$ double shell closure and ranges in $Z$ from In to Cs, with Sn isotopes measured out $A=135$, typical measurement precision is 100 ppb level or better. encompasses a possible major waiting point astrophysical $r$ process, impact masses on process shown...
The Canadian Penning Trap mass spectrometer at the Californium Rare Isotope Breeder Upgrade (CARIBU) facility was used to measure masses of eight neutron-rich isotopes Nd and Sm. These measurements are first push into region nuclear relevant formation rare-earth abundance peak $A\ensuremath{\sim}165$ by rapid neutron-capture process. We compare our results with theoretical predictions obtained from ``reverse engineering'' surface that best reproduces observed solar abundances in this through...
The electroweak interaction in the standard model is described by a pure vector-axial-vector structure, though any Lorentz-invariant component could contribute. In this Letter, we present most precise measurement of tensor currents low-energy regime examining β-ν[over ¯] correlation trapped ^{8}Li ions with Beta-decay Paul Trap. We find a_{βν}=-0.3325±0.0013_{stat}±0.0019_{syst} at 1σ for case coupling to right-handed neutrinos (C_{T}=-C_{T}^{'}), which consistent prediction.
Abstract. Phase transitions can influence mantle convection patterns, inhibiting or promoting vertical flow. One such transition is the ringwoodite-to-bridgmanite plus periclase transition, which has a negative Clapeyron slope and therefore reduces flow between upper lower mantle. Interactions different significant curvature potentially result in complexities mid-mantle geodynamics – affecting stagnation of slabs free upward motion plumes. Here, we consider two examples where non-linear...
We present the first measurement of α-β-ν angular correlation in Gamow-Teller β^{+} decay ^{8}B. This was accomplished using Beta-decay Paul Trap, expanding on our previous work β^{-} ^{8}Li. The ^{8}B result is consistent with V-A electroweak interaction standard model and, its own, provides a limit exotic right-handed tensor current relative to axial-vector |C_{T}/C_{A}|^{2}<0.013 at 95.5% confidence level. represents high-precision measurements mirror decays and made possible through use...
The low-energy recoiling ions from the $\ensuremath{\beta}$ decay of $^{134}\mathrm{Sb}$ were studied by using Beta-decay Paul Trap. Using this apparatus, singly charged suspended in vacuum at center a detector array used to detect emitted particles, $\ensuremath{\gamma}$ rays, and recoil coincidence. emerge trap with negligible scattering, allowing $\ensuremath{\beta}$-decay properties charge-state distribution daughter be determined $\ensuremath{\beta}$-ion coincidences. First-forbidden...
Beta-delayed-neutron ($\beta$n) spectroscopy was performed using the Beta-decay Paul Trap and an array of radiation detectors. The $\beta$n branching ratios energy spectra for $^{135,136}$Sb $^{140}$I were obtained by measuring time flight recoil ions emerging from trapped ion cloud. These nuclei are located at edge isotopic region identified as having that impact r-process abundance pattern around A~130 peak. For $^{140}$I, 14.6(11)%, 17.6(28)%, 7.6(28)% determined, respectively. $^{135}$Sb...
A detailed study of the $\ensuremath{\beta}$-delayed neutron emission properties $^{137,138}\mathrm{I}$ and $^{144,145}\mathrm{Cs}$ has been performed by confining ions in Beta-decay Paul Trap. The daughter following $\ensuremath{\beta}$ decay emerge from trapped-ion cloud with negligible scattering allowing reconstruction recoil-ion energy time flight. From this information, neutron-emission branching ratios neutron-energy spectra were deduced. results for $^{137}\mathrm{I}$ decays are...
Excited structures in $^{146}\mathrm{Ce}$ were populated $\ensuremath{\beta}$ decay of the high-spin state neutron-rich nucleus $^{146}\mathrm{La}$. The beam was produced by Californium Rare Isotope Breeder Upgrade (CARIBU) facility at Argonne National Laboratory, reaccelerated ATLAS accelerator, and implanted on a moving-tape system middle GAMMASPHERE array. scheme high-spin, $\ensuremath{\beta}$-decaying $^{146}\mathrm{La}$ revised with respect to previous studies evaluated nuclear data....
Throughout Earth&#8217;s mantle, several significant phase transitions occur, with the Ol&#8594;Wd and Rw&#8594;Brm+Pc reactions (exothermic endothermic respectively) producing large discontinuities in seismic velocity structure at 410 660km depth respectively (&#8216;410&#8217; &amp; &#8216;660&#8217;). The equilibrium of these is sensitive to temperature, resulting topography has been observed various phases. Numerical modelling from 1980s onwards suggested...
Studies aiming to determine the astrophysical origins of nuclei produced by rapid neutron capture process ($r$ process) rely on nuclear properties as inputs for simulations. The solar abundances can be used a benchmark such calculations, with $r$-process rare-earth peak (REP) around mass number ($A$) $164$ being special interest due its presently unknown origin. With advancement rare isotope beam production over last decade and improvement in experimental sensitivities, many these REP...
Abstract. Phase transitions can influence mantle convection patterns, inhibiting or promoting vertical flow. One such transition is the ringwoodite-to-bridgmanite plus periclase transition, which has a negative Clapeyron slope and therefore reduces flow between upper lower mantle. Interactions different significant curvature potentially result in complexities mid-mantle geodynamics – affecting stagnation of slabs free upward motion plumes. Here, we consider two examples where non-linear...
Properties of neutron-rich nuclei in the A˜160 region are important for achieving a better understanding nuclear structure this where little is known owing to diffculties production these at present physics facilities. These properties essential ingredients interpretation rareearth peak r process abundance distribution, since theoretical models sensitive input. Predicated on ideas, we have initiated new experimental program Argonne National Laboratory. During first experiment, beams from...
The β decay of 8 B to α-unstable Be presents a unique opportunity determine angular correlations with unprecedented precision.In this decay, the experimental sensitivity small deviations from Standard Model prediction are enhanced by large Q value mass nuclei involved, and presence an additional correlation that arises between emitted particle, neutrino, α particles.We present here current status effort precisely β-ν coefficient (a βν ) trapped ions using Beta-decay Paul Trap at Argonne...