English
Related papers

Related papers: Study of the effects caused by space charge in ele…

200 papers

Electron cloud effects have become one of the main performance limitations for circular particle accelerators operating with positively-charged beams. Among other machines worldwide, the CERN Super Proton Synchrotron (SPS), as well as the…

Accelerator Physics · Physics 2020-04-22 X. Cui , S. Gilardoni , M. Giovannozzi , G. Iadarola

Electron transpiration cooling (ETC) offers a promising approach for thermal management of hypersonic vehicles by leveraging thermionic emission from the leading edge. While emitted electrons cool the surface, subsequent collection of…

Plasma Physics · Physics 2025-08-11 Bryce Boyer , Timothy S. Fisher

We present a study of spin transport in charge and spin inhomogeneous semiconductor systems. In particular, we investigate the propagation of spin-polarized electrons through a boundary between two semiconductor regions with different…

Materials Science · Physics 2007-05-23 Dan Csontos , Sergio E. Ulloa

The Casimir effect for Dirac as well as for scalar charged particles is influenced by external magnetic fields. It is also influenced by finite temperature. Here we consider the Casimir effect for a charged scalar field under the combined…

High Energy Physics - Theory · Physics 2007-05-23 M. V. Cougo-Pinto , C. Farina , M. R. Negrao , A. Tort

Liquid metal electrodes are one of the key components of different electrical energy storage technologies. The understanding of transport phenomena in liquid electrodes is mandatory in order to ensure efficient operation. In the present…

Fluid Dynamics · Physics 2021-04-02 Paolo Personnettaz , Steffen Landgraf , Michael Nimtz , Norbert Weber , Tom Weier

The relaxation of the distribution function of the electrons drifting under the influence of a homogeneous electric field in noble gases is known to take place over an extended spatial domain at `intermediate' values of the reduced electric…

Plasma Physics · Physics 2020-10-21 A. Albert , D. Bošnjaković , S. Dujko , Z. Donkó

The transport of the energy contained in electrons, both thermal and suprathermal, in solar flares plays a key role in our understanding of many aspects of the flare phenomenon, from the spatial distribution of hard X-ray emission to global…

Solar and Stellar Astrophysics · Physics 2016-06-22 Nicolas H. Bian , Eduard P. Kontar , A. Gordon Emslie

The temperature and electric field dependence of electronic contribution to the thermal conductivity (TC) of a granular superconductor is considered within a 3D model of inductive Josephson junction arrays. In addition to a low-temperature…

Superconductivity · Physics 2009-11-07 Sergei Sergeenkov

We study the effects of the electromagnetic subvacuum fluctuations on the dynamics of a nonrelativistic charged particle in a wavepacket. The influence from the quantum field is expected to give an additional effect to the velocity…

Quantum Physics · Physics 2015-05-13 Tai-Hung Wu , Jen-Tsung Hsiang , Da-Shin Lee

We study the charge density, form factors and spin distributions of the electron induced by its |e \gamma> light-front Fock state in impact parameter space. Only transversally compact Fock states contribute to the leading behavior of the…

High Energy Physics - Phenomenology · Physics 2010-02-04 Paul Hoyer , Samu Kurki

Microscopic processes giving the energy gain and loss of a two-dimensional electron system in long-range potential fluctuations are studied theoretically at the breakdown of the quantum Hall effect in the case of even-integer filling…

Mesoscale and Nanoscale Physics · Physics 2009-10-31 Hiroshi Akera

Quantum effects for electrons in a storage ring are studied in a co-moving, accelerated frame. The polarization effect due to spin flip synchrotron radiation is examined by treating the electron as a simple quantum mechanical two-level…

High Energy Physics - Theory · Physics 2007-05-23 Jon Magne Leinaas

The energy and momentum densities of the fields of a free electron in a plane electromagnetic wave include interference terms that are the classical version of the ``dressing'' of the electron the arises in a quantum analysis. The…

Accelerator Physics · Physics 2007-05-23 Kirk T. McDonald , Konstantin Shmakov

The differences of the ejection-image structures in the chromospheric lines and the coronal continuum are considered. The outer, more diffusive scattering envelope of the ejection seems to be produced by the excessive free electrons due to…

General Physics · Physics 2017-06-09 Igor F. Nikulin

Charge separation effects in the expansion of magnetized relativistic electron-ion plasmas into a vacuum are examined using 2-1/2-dimensional particle-in-cell plasma simulations. The electrostatic field at the plasma surface decelerates…

Astrophysics · Physics 2009-11-10 Kazumi Nishimura , Edison Liang , S. Peter Gary

Electromagnetic fields induced by the space charge in relativistic beams play an important role in Accelerator Physics. They lead to emittance growth, slice energy change, and the microbunching instability. Typically, these effects are…

Accelerator Physics · Physics 2021-02-03 Petr M. Anisimov , Nikolai Yampolsky

Stochastic acceleration of particles under a pressure balance condition can accommodate the universal $p^{-5}$ spectra observed under many different conditions in the inner heliosphere. In this model, in order to avoid an infinite build up…

High Energy Astrophysical Phenomena · Physics 2016-09-06 Ciaran Kenny , Peter Duffy

Controlling interactions between cold molecules using external fields can elucidate the role of quantum mechanics in molecular collisions. We create a new experimental platform in which ultracold rubidium atoms and cold ammonia molecules…

Atomic Physics · Physics 2011-05-24 L. P. Parazzoli , N. J. Fitch , P. S. Zuchowski , J. M. Hutson , H. J. Lewandowski

The characteristics of field electron and ion emission change when the space charge formed by the emitted charge is sufficient to suppress the extracting electric field. This phenomenon is well described for planar emitting diodes by the…

Applied Physics · Physics 2021-06-07 Andreas Kyritsakis , Mihkel Veske , Flyura Djurabekova

Recently Bo E. Sernelius [Phys. Rev. B {\bf 71}, 235114 (2005)] investigated the effects of spatial dispersion on the thermal Casimir force between two metal half spaces. He claims that incorporating spatial dispersion results in a…

Quantum Physics · Physics 2009-11-13 G. L. Klimchitskaya , V. M. Mostepanenko