A5063965563- Nuclear Physics and Applications
- Radiation Detection and Scintillator Technologies
- Nuclear physics research studies
- Particle Detector Development and Performance
- Astronomical and nuclear sciences
- Nuclear reactor physics and engineering
- Atomic and Subatomic Physics Research
- Medical Imaging Techniques and Applications
- Particle physics theoretical and experimental studies
- Terahertz technology and applications
- Nuclear Materials and Properties
- Boron Compounds in Chemistry
- Astro and Planetary Science
- Luminescence Properties of Advanced Materials
- Antiplatelet Therapy and Cardiovascular Diseases
- High Temperature Alloys and Creep
- Advanced Semiconductor Detectors and Materials
- Induction Heating and Inverter Technology
- Neutrino Physics Research
- Superconducting Materials and Applications
- Nuclear materials and radiation effects
- Scientific Research and Discoveries
- Platelet Disorders and Treatments
- Quantum Chromodynamics and Particle Interactions
- Atomic and Molecular Physics
Intertek (United States)
2017-2021
Universidade de Santiago de Compostela
2008-2020
Lawrence Berkeley National Laboratory
2013-2014
Stanford University
2012-2013
Laboratoire de Physique des deux infinis Bordeaux
2009-2010
University of Helsinki
2009
University of Warsaw
2009
Yale University
2009
CEA DAM Île-de-France
2009
Research Association for Combustion Engines
2009
We have studied the β decay of Tz=−1,f7/2 shell nuclei Ni54,Fe50,Cr46, and Ti42 produced in fragmentation reactions. The proton separation energies daughter Tz=0 are relatively large (≈4–5 MeV) so studies γ rays essential. experiments were performed at GSI as part Stopped-beam campaign with RISING setup consisting 15 Euroball Cluster Ge detectors. From newly obtained high precision β-decay half-lives, excitation energies, branching ratios, we able to extract Fermi Gamow-Teller transition...
One-neutron knockout reactions from neutron-rich nuclei, with Z=6−13 and N=8−22, were studied at the Fragment Separator (GSI) high beam energies, around 700 MeV/nucleon. Structural phenomena such as formation of one-neutron halos in odd-mass carbon isotopes (C15,17,19) will be discussed. In addition, measurements N22 carried out for first time demonstrate clearly change a 0d5/2 to 1s1/2 orbital valence neutron, an effect that is expected above N=14 was also observed O23 F24. The possibility...
One-neutron knockout data for 18−22N are analyzed in the eikonal approximation of Glauber model. The role s-d shell and crossing N=14 neutron subshell discussed. Of particular interest is nucleus 22N, where provide a sensitive experimental test possible halo structure its ground state. observation narrow momentum distribution 21N fragments, together with an essential 1s1/2 contribution needed to describe observed longitudinal-momentum distribution, allow firm conclusion that state 22N...
The low temperature scintillation properties of 5 atomic % Eu:SrI <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> from ambient down to K were studied for the first time. With decreasing temperature, a shift in emission wavelength and shortening decay time observed. Light yield energy resolution exhibited notable changes with maximized as was decreased. A degradation light proportionality
Single neutron- and proton-removal cross sections have been systematically measured for 72 medium-mass neutron-rich nuclei around Z=50 energies 900A MeV using the FRagment Separator (FRS) at GSI. Neutron-removal are described by considering knock-out process together with initial- final-state interactions. Proton-removal are, however, significantly smaller than predicted same calculations. The observed difference can be explained as due to knockout of short-correlated protons in...
Studies with different CsI(Tl) crystals coupled to avalanche photodiodes were performed in the frame of R+D programme for design R3B calorimeter (CALIFA). The study energy resolution has been lengths varying from 1 10 cm and square section (1 times <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> ), attending optimization parameters (i.e., crystal wrapping, optical coupling photodiode electronic chain). obtained results photo-diodes are...
The production cross sections of neutron-rich fission residues in reactions induced by $^{238}\mathrm{U}$ projectiles at $950A$ MeV impinging on Pb and Be targets are investigated the Fragment Separator GSI. These two allow us to investigate processes reaction mechanisms, Coulomb nuclear excitations, study role these mechanisms neutron excess final fragments.
Studies with different bi-frustum CsI(Tl) crystal samples from several providers, coupled to large area avalanche photodiodes (Hamamatsu S8664-1010 2CH), specifically developed for this project, were performed as part of the R&D program design R <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sup> B calorimeter (CALIFA). Particular attention is given energy resolution optimization realistic dimensions. The results obtained Large Area...
Abstract There are new challenges for plant operators due to the increased share of renewable energy. Plant must maintain high reliability and profits while plants being required be more flexible compensate variable generation addition these renewables into grid. deal with thermal strain wear-and-tear such operations. Various models have been proposed in literature. However, no work has reported on development a robust prediction model. The aim this study was determine which machine learning...
Among the variety of crystal calorimeters recently designed for several physics facilities, CALIFA (CALorimeter In-Flight emitted gAmmas and light-charged particles) has especially demanding requirements since it must perform within a very complicated energy domain (gamma-ray energies from 0.1 to 20 MeV up 300 protons). As part R&D program Barrel section CALIFA, reduced geometry prototype was constructed. This consisted 3 × 5 array CsI(Tl) crystals varying dimensions, coupled large area...
Wind based electric generation is one of the fastest growing energy sources in world. With rapid development wind farms, many challenges have emerged with respect to reliability and availability in-service equipment. Additionally, increasing size turbine blades, both onshore offshore, serviceability maintainability equipment poses its own unique challenge. There also an inherent risk from economics production, which dictates that low-cost manufacturing methods are employed produce...
Studies with different bi-frustum CsI(Tl) crystal samples from several providers, coupled to large area avalanche photodiodes (Hamamatsu S8664-1010 2CH), specifically developed for this project, were performed as part of the R&D program design R3B calorimeter (CALIFA). Particular attention is given energy resolution optimization realistic dimensions. The results obtained Large Area Avalanche Photo-Diode (LAAPD) are very promising and suggest a suitable candidate barrel calorimeter.
We describe the design and operation of a unique hydraulic press for study scintillator materials under isostatic pressure. This press, capable developing pressure gigapascal, consists large sample chamber pressurized by two-stage amplifier. The optical detection scintillation light emitted is performed, through aperture port, photodetector located outside vessel. In addition to providing essential pressure-dependent studies on emission characteristics radioluminescent materials, this...