NMR in metals, metal particles and metal cluster compounds
... the question ‘where’ the electrons are. In molecular solids the atoms (e.g. Xe) or molecules (e.g. benzene) retain their identity and are kept together by the rather weak van der Waals forces, based on induced electric dipoles. Permanent dipoles give rise to more directional forces, like the hydroge ...
... the question ‘where’ the electrons are. In molecular solids the atoms (e.g. Xe) or molecules (e.g. benzene) retain their identity and are kept together by the rather weak van der Waals forces, based on induced electric dipoles. Permanent dipoles give rise to more directional forces, like the hydroge ...
January 20, 2004 9:50 WSPC/140-IJMPB 02353
... The aim of this article is to present a simple, pedagogical and unified derivation of the spin current for both models. The derivation of Murakami et al.6,7 emphasizes on the momentum space topology which requires some advanced mathematical knowledge. The semi-classical derivations presented in Refs ...
... The aim of this article is to present a simple, pedagogical and unified derivation of the spin current for both models. The derivation of Murakami et al.6,7 emphasizes on the momentum space topology which requires some advanced mathematical knowledge. The semi-classical derivations presented in Refs ...
J. J. Thomson From Wikipedia, the free encyclopedia This article is
... Thomson made his suggestion on 30 April 1897 following his discovery that cathode rays (at the time known as Lenard rays) could travel much further through air than expected for an atom-sized particle.[14] He estimated the mass of cathode rays by measuring the heat generated when the rays hit a ther ...
... Thomson made his suggestion on 30 April 1897 following his discovery that cathode rays (at the time known as Lenard rays) could travel much further through air than expected for an atom-sized particle.[14] He estimated the mass of cathode rays by measuring the heat generated when the rays hit a ther ...
fulltext ver 2
... applications has created a shortage of the gas which poses a problem for neutron spallation sources that require higher resolution and larger sensors. In this thesis a novel material and clean room compatible process for neutron conversion are discussed. Simulations and fabrication have been execute ...
... applications has created a shortage of the gas which poses a problem for neutron spallation sources that require higher resolution and larger sensors. In this thesis a novel material and clean room compatible process for neutron conversion are discussed. Simulations and fabrication have been execute ...
Nuclear Physics A. Stationary States of Nuclei
... of the nucleus to that of another nucleus containing one neutron, proton or a-particle, respectively, less than the given nucleus. In this way, it can be decided whether a given nucleus is stable or not. Furthermore, it can be deduced whether a given nuclear reaction will be endothermic or exothermi ...
... of the nucleus to that of another nucleus containing one neutron, proton or a-particle, respectively, less than the given nucleus. In this way, it can be decided whether a given nucleus is stable or not. Furthermore, it can be deduced whether a given nuclear reaction will be endothermic or exothermi ...
Quark matter influence on observational - Instituut
... This thesis concludes of one and a half year of research on observational properties of quark stars, based on quantum field theoretical calculations of quark matter. I have done my research at the ‘Anton Pannekoek Institute for Astronomy’ of the University of Amsterdam and at the department of Theor ...
... This thesis concludes of one and a half year of research on observational properties of quark stars, based on quantum field theoretical calculations of quark matter. I have done my research at the ‘Anton Pannekoek Institute for Astronomy’ of the University of Amsterdam and at the department of Theor ...
Energetic particle influence on the Earth`s atmosphere
... principles arguments and correlations. In particular, the IPCC Fifth Assessment Report (IPCC 2013), only considers the changes in the total solar irradiance and does not take into consideration changes at different wavelengths as well as the energetic particle precipitation (EPP) impact on the Earth ...
... principles arguments and correlations. In particular, the IPCC Fifth Assessment Report (IPCC 2013), only considers the changes in the total solar irradiance and does not take into consideration changes at different wavelengths as well as the energetic particle precipitation (EPP) impact on the Earth ...
Kaon Condensation
... Part I: Introduction to Kaonic Physics Part II: Kaon Condensation `a la Vector Manifestation ...
... Part I: Introduction to Kaonic Physics Part II: Kaon Condensation `a la Vector Manifestation ...
light scattering by nonspherical particles
... with the size parameters of 20 and 3? respectiveiy. A ce11 size of Xd/20 is used where Ad is the wavelength inside the particle. In the FDTD simulation. the interpolation using the electric displacement to the cell center is employed. . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
... with the size parameters of 20 and 3? respectiveiy. A ce11 size of Xd/20 is used where Ad is the wavelength inside the particle. In the FDTD simulation. the interpolation using the electric displacement to the cell center is employed. . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...
Mechanics, Vibrations and Waves PHY101 Tutorial Sheet 1
... maximum range, s. If the ball is then thrown vertically upwards with the same initial speed so that it rises to a height, h, derive a simple equation for h in terms of s. ...
... maximum range, s. If the ball is then thrown vertically upwards with the same initial speed so that it rises to a height, h, derive a simple equation for h in terms of s. ...
Elementary particle
In particle physics, an elementary particle or fundamental particle is a particle whose substructure is unknown, thus it is unknown whether it is composed of other particles. Known elementary particles include the fundamental fermions (quarks, leptons, antiquarks, and antileptons), which generally are ""matter particles"" and ""antimatter particles"", as well as the fundamental bosons (gauge bosons and Higgs boson), which generally are ""force particles"" that mediate interactions among fermions. A particle containing two or more elementary particles is a composite particle.Everyday matter is composed of atoms, once presumed to be matter's elementary particles—atom meaning ""indivisible"" in Greek—although the atom's existence remained controversial until about 1910, as some leading physicists regarded molecules as mathematical illusions, and matter as ultimately composed of energy. Soon, subatomic constituents of the atom were identified. As the 1930s opened, the electron and the proton had been observed, along with the photon, the particle of electromagnetic radiation. At that time, the recent advent of quantum mechanics was radically altering the conception of particles, as a single particle could seemingly span a field as would a wave, a paradox still eluding satisfactory explanation.Via quantum theory, protons and neutrons were found to contain quarks—up quarks and down quarks—now considered elementary particles. And within a molecule, the electron's three degrees of freedom (charge, spin, orbital) can separate via wavefunction into three quasiparticles (holon, spinon, orbiton). Yet a free electron—which, not orbiting an atomic nucleus, lacks orbital motion—appears unsplittable and remains regarded as an elementary particle.Around 1980, an elementary particle's status as indeed elementary—an ultimate constituent of substance—was mostly discarded for a more practical outlook, embodied in particle physics' Standard Model, science's most experimentally successful theory. Many elaborations upon and theories beyond the Standard Model, including the extremely popular supersymmetry, double the number of elementary particles by hypothesizing that each known particle associates with a ""shadow"" partner far more massive, although all such superpartners remain undiscovered. Meanwhile, an elementary boson mediating gravitation—the graviton—remains hypothetical.