搜索结果: 1-14 共查到“工学 Neutron”相关记录14条 . 查询时间(0.152 秒)
Axisymmetric Grazing-Incidence Focusing Optics for Small-Angle Neutron Scattering
Atom and neutron optics X-ray optics small-angle neutron scattering
2012/5/17
We propose and design novel axisymmetric focusing mirrors, known as Wolter optics, for small-angle neutron scattering instruments. Ray-tracing simulations show that using the mirrors can result in mor...
SPHERES, Julich's High-Flux Neutron Backscattering Spectrometer at FRM II
SPHERES Julich's High-Flux Neutron FRM II Instrumentation and Detectors
2012/4/24
SPHERES (SPectrometer with High Energy RESolution) is a third-generation neutron backscattering spectrometer, located at the 20 MW German neutron source FRM II and operated by the Juelich Centre for N...
From x-ray telescopes to neutron scattering: using axisymmetric mirrors to focus a neutron beam
atom and neutron optics x-ray optics Instrumentation and Detectors
2012/4/24
We demonstrate neutron beam focusing by axisymmetric mirror systems based on a pair of mirrors consisting of a confocal ellipsoid and hyperboloid. Such a system, known as a Wolter mirror configuration...
Constraining the neutron-neutron scattering length with eftnopi
neutron-neutron scattering length eftnopi
2011/7/21
We compute a model-independent correlation between the difference of neutron-neutron and proton-proton scattering lengths |a(nn)-a^C(pp)| and the splitting in binding energies between Helium-3 and tri...
Anomalous pairing vibration in neutron-rich Sn isotopes beyond the N=82 magic number
Anomalous pairing vibration neutron-rich Sn isotopes magic number
2011/7/21
Two-neutron transfer associated with the pair correlation in superfluid neutron-rich nuclei is studied with focus on low-lying $0^+$ states in Sn isotopes beyond the N=82 magic number. We describe mic...
Constraints on two-neutron separation energy in the Borromean $^{22}$C nucleus
Binding energies Faddeev equation Three-body
2011/10/11
Abstract: The recently extracted matter radius of carbon isotope $^{22}$C allows us to estimate the mean-square distance of a halo neutron with respect to the center-of-mass of this nucleus. By consid...
Radiative Neutron Capture on Lithium-7
radiative capture halo nuclei effective field theory
2011/10/11
Abstract: The radiative neutron capture on lithium-7 is calculated model independently using a low energy halo effective field theory. The cross section is expressed in terms of scattering parameters ...
Reply to the comments by I. Angeli and J. Csikai on : 'Cross sections of neutron-induced reactions'
I. Angeli J. Csikai neutron-induced reactions Nuclear Theory
2011/10/11
Abstract: Comments by Dr. I. Angeli and Dr. J. Csikai raise concerns and questions regarding omission of references, proper name of the model, energy dependence of the radius and average chord length ...
Characterization and Application of the Thermal Neutron Radiography Beam in the Egyptian Second Experimental and Training Research Reactor (ETRR-2)
Egyptian Second Experimental Training Research Reactor
2009/9/3
The Experimental, Training, Research Reactor (ETRR-2) is an open-pool multipurpose reactor (MPR) with a core power of 22 MWth cooled and moderated by light water and reflected with beryllium. It...
Analyses of Instability Events in the Peach Bottom-2 BWR Using Thermal-Hydraulic and 3D Neutron Kinetic Coupled Codes Technique
3D Neutron Kinetic Codes Technique
2009/9/3
Boiling water reactor (BWR) instabilities may occur when, starting from a stable operating condition, changes in system parameters bring the reactor towards an unstable region. In order to design more...
International Course to Support Nuclear Licensing by User Training in the Areas of Scaling, Uncertainty, and 3D Thermal-Hydraulics/Neutron-Kinetics Coupled Codes: 3D S.UN.COP Seminars
Nuclear Licensing 3D Thermal-Hydraulics/Neutron-Kinetics
2009/9/3
Thermal-hydraulic system computer codes are extensively used worldwide for analysis of nuclear facilities by utilities, regulatory bodies, nuclear power plant designers, vendors, and research organiza...
The Canadian Neutron Beam Centre (CNBC) is part of the National Research Council. The Centre is located inside Chalk River Laboratories, in Ontario.
Influence of high pressure annealing on electrical properties of surface layer of neutron irradiated or germanium-doped Czochralski-grown silicon
germanium-doped silicon neutron-irradiated silicon defects
2011/4/27
The effect of annealing at 720–920 K under enhanced pressure (up to 1.1 GPa) in argon ambient on electrical properties of the surface layer of the Czochralski-grown silicon (Cz-Si) subjected to neutro...