Results 1 to 10 of about 596,723 (309)

Koopman Operator and Path Integral of Quantum Free-Electron Laser Model

Mathematics, 2022
A quantum model of a free-electron laser (FEL) is considered. Two different approaches for the exploration of the the FEL system are considered. In the first case, the Heisenberg equations of motion are mapped on the basis of the initial wave functions ...
Alexander Iomin
doaj   +1 more source

A Novel Classical Model of the Free Electron

Journal of Modern Physics, 2022
openaire   +3 more sources

The Nanoscale Free-Electron Model [PDF]

, 2010
To appear in "Handbook of Nanophysics" (ed. K.Sattler) (Taylor & Francis 2010)
Urban, D. F., Bürki, J., Stafford, C. A., Grabert, Hermann   +3 more
openaire   +3 more sources

Few-Femtosecond Dynamics of Free-Free Opacity in Optically Heated Metals

Physical Review X, 2022
Interaction of light with an excited free-electron gas is a fundamental process spanning a large variety of fields in physics. The advent of femtosecond laser pulses and extreme-ultraviolet sources allowed one to put theoretical models to the test ...
A. Niedermayr, M. Volkov, S. A. Sato, N. Hartmann, Z. Schumacher, S. Neb, A. Rubio, L. Gallmann, U. Keller   +8 more
doaj   +1 more source

Coherent Excitation of Bound Electron Quantum State With Quantum Electron Wavepackets

Frontiers in Physics, 2022
We present a fully quantum model for the excitation of a bound electron based on the “free-electron bound-electron resonant interaction” (FEBERI) scheme.
Du Ran, Du Ran, Du Ran, Bin Zhang, Reuven Ianconescu, Reuven Ianconescu, Aharon Friedman, Jacob Scheuer, Amnon Yariv, Avraham Gover   +9 more
doaj   +1 more source

Simple model for the nonlinear radiation field of a free electron laser

Physical Review Accelerators and Beams, 2020
It is shown that Jacobi elliptic function solutions of the nonlinear Duffing equation model the radiation field in a high-gain free electron laser through early saturation. After initial start-up, the field can be expressed equivalently with a hyperbolic
Erik Hemsing
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Comparison between optical and electrophysical data on free electron concentration in tellurium doped n-GaAs [PDF]

Modern Electronic Materials, 2020
A theoretical model has been developed for determining free electron concentration in n-GaAs from characteristic points in the far infrared region of reflection spectra.
Tatyana G. Yugova, Aleksandr G. Belov, Vladimir E. Kanevskii, Evgeniya I. Kladova, Stanislav N. Knyazev   +4 more
doaj   +3 more sources

Photoionization of nS and nD Rydberg atoms of Rb and Cs from the near-infrared to the ultraviolet spectral region

New Journal of Physics, 2021
We present calculations of the photoionization (PI) cross sections of rubidium and cesium Rydberg atoms for light with wavelengths ranging from the infrared to the ultraviolet, using model potentials from Marinescu et al (1994 Phys. Rev. A 49 982).
Michael A Viray, Eric Paradis, Georg Raithel   +2 more
doaj   +1 more source

Formulation of heat conduction and thermal conductivity of metals

Open Physics, 2019
The well-known low-pressure monatomic gas thermal conductivity expression is based on the Maxwell-Boltzmann velocity distribution and involves the mean particle velocity, the gas heat capacity at constant volume and the particle mean free path.
Chebbi Rachid
doaj   +1 more source

Model-based optimization of tapered free-electron lasers

Physical Review Special Topics. Accelerators and Beams, 2015
The energy extraction efficiency is a figure of merit for a free-electron laser (FEL). It can be enhanced by the technique of undulator tapering, which enables the sustained growth of radiation power beyond the initial saturation point.
Alan Mak, Francesca Curbis, Sverker Werin   +2 more
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