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The quadratic low-temperature dependence of resistance in ordinary metals is determined by the momentum relaxation due to electron-electron scattering in the presence Umklapp processes and scattering on impurities. In metals without…

强关联电子 · 物理学 2021-05-12 V. P. Mineev

We report an unconventional temperature dependence of the resistivity in several strongly correlated systems approaching a localized to itinerant electronic transition from the itinerant electron side. The observed resistivity, proportioanl…

强关联电子 · 物理学 2009-11-10 F. Rivadulla , J. -S. Zhou , J. B. Goodenough

The excitation of soft dipole modes in light nuclei via inelastic electron scattering is investigated. I show that, under the proposed conditions of the forthcoming electron-ion colliders, the scattering cross sections have a direct…

核理论 · 物理学 2008-11-26 C. A. Bertulani

Clusters of galaxies are believed to be capable to accelerate protons at accretion shocks to energies exceeding 10^18 eV. At these energies, the losses caused by interactions of cosmic rays with photons of the Cosmic Microwave Background…

高能天体物理现象 · 物理学 2016-08-17 G. Vannoni , F. A. Aharonian , S. Gabici , S. R. Kelner , A. Prosekin

The current flux density is a vector field that can be used to describe theoretically how electrons flow in a system out-of-equilibrium. In this work, we unequivocally demonstrate that the signal obtained from time-resolved X-ray scattering…

原子物理 · 物理学 2020-02-04 Gunter Hermann , Vincent Pohl , Gopal Dixit , Jean Christophe Tremblay

We consider a relativistically moving blob consisting of an isotropic electron distribution that Compton-scatters photons from an external isotropic radiation field. We compute the resulting beaming pattern, i.e. the distribution of the…

高能天体物理现象 · 物理学 2011-07-27 Anne Hutter , Felix Spanier

The rapid cycling synchrotron (RCS) is part of China Spallation Neutron Source (CSNS). The RCS provides 1.6GeV protons with a repetition rate of 25Hz. The RF system in RCS is mainly composed of a ferrite loaded RF cavity, a high power…

加速器物理 · 物理学 2014-04-11 Li Xiao , Sun Hong , Long Wei , Zhao Fa-Cheng , Zhang Chun-Lin

A knowledge of the particle escape time from the acceleration regions of many space and astrophysical sources is of critical importance in the analysis of emission signatures produced by these particles and in the determination of the…

高能天体物理现象 · 物理学 2018-11-28 Frederic Effenberger , Vahé Petrosian

We investigate the binding energy parameters that should be used in modeling electron and neutrino scattering from nucleons bound in a nucleus within the framework of the impulse approximation. We discuss the relation between binding…

核理论 · 物理学 2019-05-31 Arie Bodek , Tejin Cai

High-temperature superconductivity in both the copper-oxide and the iron-pnictide/chalcogenide systems occurs in close proximity to antiferromagnetically ordered states. Neutron scattering has been an essential technique for characterizing…

超导电性 · 物理学 2013-12-04 John M. Tranquada , Guangyong Xu , Igor A. Zaliznyak

Measurements and calculations of Coulomb drag between two low density, closely spaced, two-dimensional electron systems are reported. The experimentally measured drag exceeds that calculated in the random phase approximation by a…

介观与纳米尺度物理 · 物理学 2009-11-07 M. Kellogg , J. P. Eisenstein , L. N. Pfeiffer , K. W. West

Processes of the secondary electron emission (SEE) from the walls are included into the Numerical Advanced Model of Electron Cyclotron Resonance Ion Sources (NAM-ECRIS). It is found that SEE strongly influences electron confinement time and…

等离子体物理 · 物理学 2022-07-06 V. Mironov , S. Bogomolov , A. Bondarchenko , A. Efremov , V. Loginov , D. Pugachev

Although both electron-ion and electron-electron bremsstrahlung contribute to the hard X-ray emission from solar flares, the latter is normally ignored. Such an omission is not justified at electron (and photon) energies above $\sim 300$…

Electron-phonon ($e$-ph) interactions are key to understanding the dynamics of electrons in materials, and can be modeled accurately from first-principles. However, when electrons and holes form Coulomb-bound states (excitons), quantifying…

材料科学 · 物理学 2020-09-09 Hsiao-Yi Chen , Davide Sangalli , Marco Bernardi

We develop a theory of designing slit experiments in two-dimensional electron systems with the Rashba spin-orbit interaction. By simulating the spatiotemporal dynamics of electrons passing through a single slit or a double slit, we find…

介观与纳米尺度物理 · 物理学 2020-01-22 Kotaro Shimizu , Masahito Mochizuki

We use a relativistic model of meson-exchange currents to compute the proton-neutron and proton-proton yields in $(e,e')$ scattering from $^{12}$C in the 2p-2h channel. We compute the response functions and cross section with the…

Fast neutron identification and spectroscopy is of great interest to nuclear physics experiments. Using the neutron elastic scattering, the fast neutron momentum can be measured. (Wang and Morris, 2013) introduced the theoretical concept…

仪器与探测器 · 物理学 2022-05-05 Pinghan Chu , Michael R. James , Zhehui Wang

A statistical analysis of the elastic unpolarized electron proton scattering data shows that, at large momentum transfer, the size and the $\epsilon$ dependence of the radiative corrections, as traditionally calculated and applied, may…

高能物理 - 唯象学 · 物理学 2008-11-26 Egle Tomasi-Gustafsson

We study inelastic energy relaxation in graphene for low energies to find out how electrons scatter with acoustic phonons and other electrons. By coupling the graphene to superconductors, we create a strong dependence of the measured…

介观与纳米尺度物理 · 物理学 2015-05-27 Juha Voutilainen , Aurelien Fay , Pasi Häkkinen , Janne K. Viljas , Tero T. Heikkilä , Pertti J. Hakonen

Strong field ionization provides a unique mean to address complex dynamics of an electron in competing Coulomb and laser fields. Recent streak camera experiment (K\"ubel, et al., Phys. Rev. Lett. 119, 183201) analyzed asymmetries in the…