搜索结果: 1-15 共查到“电子物理学 Electrons”相关记录19条 . 查询时间(0.234 秒)
Comment on "Head-on collision of electron acoustic solitary waves in a plasma with nonextensive hot electrons"
Comment Head-on collision of electron acoustic solitary waves nonextensive hot electrons Space Physics
2012/4/20
In a recent paper "Head-on collision of electron acoustic solitary waves in a plasma with nonextensive hot electrons" [Astrophys. Space Sci. 338, 271-278 (2012)] Eslami, Mottaghizadeh and Pakzad deal ...
Cooling electrons from 1 K to 400 mK with V-based nanorefrigerators
Cooling electrons V-based nanorefrigerators
2010/11/17
The fabrication and operation of V-based superconducting nanorefrigerators is reported. Speci cally, electrons in an Al island are cooled thanks to hot-quasiparticle extraction provided by tunnel-coup...
High-energy long-lived resonance of electrons in fractal-like semiconductor heterostructures
High-energy long-lived resonance electrons fractal-like semiconductor heterostructures
2010/11/9
A fractal-like alignment of quantum wells is shown to accommodate resonant states with long lifetimes. For the parameters of the semiconductor heterostructure GaAs/Al$_{0.4}$Ga$_{0.6}$As with the wel...
Physicists have used holography to reliably do to electrons what they can already do to photons – twist the particle wavefronts to create beams with vortices at their centre. The researchers say that ...
Researchers in Germany and the US have used flashes of laser light to follow the motion of valence electrons as they are excited and ejected from atoms of krypton. They say that their technique could ...
An exotic type of symmetry - suggested by string theory and theories of high-energy particle physics, and also conjectured for electrons in solids under certain conditions - has been observed experime...
New Statistical Multiparticle Approach to the Acceleration of Electrons by the Ion Field in Plasmas
New Statistical Multiparticle Ion Field Electrons
2009/9/4
The phenomenon of the acceleration of the (perturbing) electrons by the ion field (AEIF) significantly reduces Stark widths and shifts in plasmas of relatively high densities and/or relatively low tem...
Investigation of a method to calculate spontaneous radiation spectrafrom relativistic electrons in undulators
undulator spontaneous radiation electron trajectory Runge-Kutta method
2009/8/14
Undulators are key devices to produce brilliant synchrotron radiation at the synchrotron radiation facilities. In this paper we present a numerical computing method, including the computing program t...
MIT chemist studies how electrons behave（图）
electrons behave solar cells lighting quantum physics
2006/11/27
November 17, 2006，Troy Van Voorhis likes to watch how things work. This natural curiosity led to his current research on the behavior of electrons and how they function in various molecular systems, i...
Transport Properties of Strongly Correlated Electrons in Quantum Dots Using a Simple Circuit Model
Kondo effect Nanoscopic systems Correlated electrons
2010/8/26
Numerical calculations are shown to reproduce the main results of recent experiments involving nonlocal spin control in nanostructures (N. J. Craig et al., Science 304, 565 (2004)). In particular, the...
Two Electrons in Vertically Coupled One-Dimensional Rings
Quantum rings Two-electron energies Trigonometric sweep method
2010/9/25
A problem of two electrons spatially separated in vertically coupled one-dimensional rings is solved exactly by using the numerical trigonometric sweep method. The change of the level-ordering and the...
Quantum Transport of Electrons Through a Parallel--Coupled Triple Quantum--Dot Molecule
Electronic transport Quantum dots Quantum interference
2010/9/25
In this article we study the electronic transport through a triple quantum–dot molecule parallel–coupled to leads under a magnetic field. Analytical expressions are obtained for both the conductance a...
Effect of a Finite Number of Electrons on the Physical Properties of Two Dimensional Parabolic Quantum Dot
Finite Number of Electrons Physical Properties Two Dimensional Parabolic Quantum Dot
2010/4/9
The effect of number of particles on the physical properties of a two dimensional parabolic quantum dot system is investigated numerically at finite temperature. The Thomas-Fermi equation is solved se...
Dimensional Crossover in Semiconductor Structures: From 3D Electron Transport to Ballistic Electrons in 1D
Semiconductor Structures 3D Electron Transport Ballistic Electrons
2010/4/9
Modern semiconductor technologies have made possible special devices in which a gradual dimensional crossover may be induced by means of applied electric fields. Two specific examples are described. T...
Manufactured Silicon Diode used as an Internal Conversion Electrons Detector
Silicon Diode an Internal Conversion Electrons Detector
2010/10/25
In this work we have studied the direct detection and spectrometric capabilities for internal conversion electrons of an ion-implanted diode, developed in the framework of R&D programs at CERN, envisa...