A5026928238- Particle physics theoretical and experimental studies
- High-Energy Particle Collisions Research
- Quantum Chromodynamics and Particle Interactions
- Particle Detector Development and Performance
- Nuclear physics research studies
- Dark Matter and Cosmic Phenomena
- Neutrino Physics Research
- Atomic and Molecular Physics
- Astronomical and nuclear sciences
- Cosmology and Gravitation Theories
- X-ray Spectroscopy and Fluorescence Analysis
- Distributed and Parallel Computing Systems
- Nuclear Physics and Applications
- advanced mathematical theories
- Black Holes and Theoretical Physics
- Radiation Detection and Scintillator Technologies
- Magnetic confinement fusion research
- Atomic and Subatomic Physics Research
- Particle accelerators and beam dynamics
- X-ray Diffraction in Crystallography
- Quantum, superfluid, helium dynamics
- Fusion materials and technologies
- Astrophysics and Cosmic Phenomena
- Radiopharmaceutical Chemistry and Applications
- Computational Physics and Python Applications
Culham Science Centre
2024
Culham Centre for Fusion Energy
2024
United Kingdom Atomic Energy Authority
2024
European Organization for Nuclear Research
2004-2020
Queen Mary University of London
2015-2016
The Langton Grammar School for Boys
2016
Yale University
2010-2012
University of Massachusetts Amherst
2011-2012
Fisheries Research Institute of Slovenia
2011
Wallenberg Wood Science Center
2011
We report the observation of two-neutrino double-beta decay in Xe-136 with T_1/2 = 2.11 +- 0.04 (stat.) 0.21 (sys.) x 10^21 yr. This second order process, predicted by Standard Model, has been observed for several nuclei but not Xe-136. The rate provides new input to matrix element calculations and search more interesting neutrino-less decay, most sensitive probe existence Majorana particles measurement neutrino mass scale.
EXO-200 is an experiment designed to search for double beta decay of $^{136}$Xe with a single-phase, liquid xenon detector. It uses active mass 110 kg enriched 80.6% in the isotope 136 ultra-low background time projection chamber capable simultaneous detection ionization and scintillation. This paper describes detector particular attention most innovative aspects design that revolve around reduction backgrounds, efficient use expensive isotopically xenon, optimization energy resolution...
The elastic scattering of $^{7}\mathrm{Li}$+$^{16}\mathrm{O}$ has been measured at ${E}_{\mathrm{Li}}=50$ MeV and fitted with an optical model potential. $^{16}\mathrm{O}$($^{7}\mathrm{Li}$,$^{7}\mathrm{Be}$)$^{16}\mathrm{N}$ reaction investigated MeV. States groups states were observed up to 6.3 excitation in the $^{16}\mathrm{N}$+$^{7}\mathrm{Be}$ system. Angular distributions for $^{16}\mathrm{N}$ ${2}^{\ensuremath{-}}$ 0.0 MeV, ${3}^{\ensuremath{-}}$ 0.297 ${4}^{\ensuremath{-}}$ 6.17...
New elastic scattering angular distributions extending over the large range 10\ifmmode^\circ\else\textdegree\fi{}---170\ifmmode^\circ\else\textdegree\fi{} c.m. are reported for $^{6}\mathrm{Li}$+$^{12}\mathrm{C}$ at 24 and 30 MeV, $^{6}\mathrm{Li}$+$^{16}\mathrm{O}$ 25.7 $^{7}\mathrm{Li}$+$^{12}\mathrm{C}$ 34 MeV. These data have been analyzed well described by optical model using Woods-Saxon potentials, or potentials with a double-folded real part. Using these previously published data,...
The ATLAS experiment is one of the experiments at Large Hadron Collider, constructed to study elementary particle interactions in collisions high-energy proton beams. individual detector components as well common experimental infrastructure are supervised by Detector Control System (DCS). DCS enables equipment supervision using operator commands, reads, processes and archives operational parameters detector, allows for error recognition handling, manages communication with external control...
The beta decay of 33Mg (N=21) presented in this Letter reveals intruder configurations both the parent and daughter nucleus. lowest excited states N=20 nucleus, 33Al, are found to have nearly 2p-2h configuration, thus extending "island inversion" beyond Mg. allowed direct beta-decay branch 5/2{+} ground state nucleus 33Al implies positive parity for 33Mg, contrary an earlier suggestion negative from a g-factor measurement. An admixture 1p-1h 3p-3h is proposed explain all experimental observables.
The beta decay of the exotic 30Ne (N=20) is reported. For first time, low-energy level structure N=19, 30Na (Tz = 4), obtained from beta-delayed gamma spectroscopy using fragment-beta-gamma-gamma coincidences. clearly displays "inversion", i.e., intruder states with mainly 2p2h configurations displacing normal to higher excitation energies. good agreement in energies and weak electromagnetic patterns Monte Carlo Shell Model calculations SDPF-M interaction sdpf valence space illustrates small...
The features of discrete and continuous ambiguities in the real phenomenological optical potential are clarified. ambiguity for scattering 90 MeV 6Li 7Li ions from 27Al is investigated. For Igo type but it Vrn=constant type. implications this that less strongly absorbed than 6Li.
Differential cross sections for elastic and inelastic $^{6}\mathrm{Li}$ scattering from $^{12}\mathrm{C}$ at ${E}_{\mathrm{c}.\mathrm{m}.=16}$ 20 MeV, $^{16}\mathrm{O}$ 18.7 MeV were measured out to ${\ensuremath{\theta}}_{\mathrm{c}.\mathrm{m}.\mathrm{\ensuremath{\approxeq}}170}$\ifmmode^\circ\else\textdegree\fi{}. Also by $^{6}\mathrm{Li}$, the excitation of ${3}^{+}$ (2.18 MeV) ${2}^{+}$ (4.31 states an estimate continuum determined. The data analyzed using distorted-wave Born...
A magnetically driven piston pump for xenon gas recirculation is presented. The designed to satisfy extreme purity and containment requirements, as appropriate the of isotopically enriched through purification system large liquid TPC EXO-200. pump, using sprung polymer gaskets, capable pumping more than 16 standard liters per minute (SLPM) with 750 torr differential pressure.
Detailed cross sections out to 170\ifmmode^\circ\else\textdegree\fi{} c.m. for elastic scattering and the excitation of states in $^{7}\mathrm{Li}$ $^{12}\mathrm{C}$ have been determined by bombarding targets with 34 MeV beams at same energy. The present results show that direct breakup total section is about 25 times larger than sequential ${(7/2)}^{\mathrm{\ensuremath{-}}}$ 4.63 state $^{7}\mathrm{Li}$. In addition, single neutron proton stripping angular distributions measured....