Results 21 to 30 of about 596,723 (309)

The electronic configuration of Fe-Ni alloy's system by Compton profile probe

open access: yesTikrit Journal of Pure Science, 2018
The calculated values of Compton profile of Fe,Ni metals and their two alloys namely Fe0.5-Ni0.5 and Fe0.64-Ni0.36 are reported. The Renormalized Free Atom(RFA) model are used to determine the most favored electron configurations for the two metals ...
Fareed M. Mohammed   +4 more
doaj   +1 more source

Ultra-low electron temperatures in nanostructured samples [PDF]

open access: yes, 2015
Nanostructured samples, be it semiconducting or metallic ones, have received considerable experimental and theoretical attention due to the manifold of possibilities to investigate fundamental physics. Not only are they viable candidates for realizations
Casparis, Lucas
core   +1 more source

Simplified model for fast optimization of a free-electron laser oscillator

open access: yesPhysical Review Accelerators and Beams, 2017
A simplified one-dimensional theoretical model for free-electron laser oscillator (FELO) calculation which reserves the main physics is proposed. Instead of using traditional macroparticles sampling method, the theoretical model takes advantage of low ...
Kai Li, Minghao Song, Haixiao Deng
doaj   +1 more source

Model-free Investigation of Ultrafast Bimolecular Chemical Reactions: Bimolecular Photo Induced Electron Transfer

open access: yesEPJ Web of Conferences, 2013
Using photoinduced bimolecular electron transfer reactions as example we demonstrate how diffusion controlled bimolecular chemical reactions can be studied in a model-free manner by quantitatively combining different ultrafast spectroscopical tools.
Rosspeintner Arnulf   +2 more
doaj   +1 more source

Approaching PetaVolts per Meter Plasmonics Using Structured Semiconductors

open access: yesIEEE Access, 2023
A newly uncovered class of plasmons in the strongly excited limit opens access to unprecedented Petavolts per meter electromagnetic fields with wide-ranging, transformative impact.
Aakash Ajit Sahai   +8 more
doaj   +1 more source

Modelling the Galactic distribution of free electrons [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2012
16 pages, 10 figures, 5 tables. Accepted for publication in the Monthly Notices of the RAS by the Royal Astronomical Society and Blackwell ...
openaire   +3 more sources

GAIN SATURATION IN FREE-ELECTRON LASERS

open access: yes, 1992
We propose a model of gain saturation in a free-electron laser, drawing a parallel with the dynamics of saturation in a conventional laser. The results achieved are then extended phenomenologically to bunched-beam operations and the results has been ...
G. Dattoli   +4 more
core   +1 more source

Existence and convergence results for the Galerkin approximation of an electronic density functional [PDF]

open access: yes, 2010
We formulate and analyze a model for the study of finite clusters of atoms or localized defects in infinite crystals based on orbital-free density functional theory.
CHRISTOPH ORTNER   +8 more
core   +1 more source

Analytic model of bunched beams for harmonic generation in the low-gain free electron laser regime

open access: yesPhysical Review Special Topics. Accelerators and Beams, 2006
One scheme for harmonic generation employs free electron lasers (FELs) with two undulators: the first uses a seed laser to modulate the energy of the electron beam; following a dispersive element which acts to bunch the beam, the second undulator ...
G. Penn, M. Reinsch, J. S. Wurtele
doaj   +1 more source

Picosecond to microsecond dynamics of X-ray irradiated materials at MHz pulse repetition rate

open access: yesScientific Reports, 2023
Modern X-ray free-electron lasers (XFELs) produce intense femtosecond X-ray pulses able to cause significant damage to irradiated targets. Energetic photoelectrons created upon X-ray absorption, and Auger electrons emitted after relaxation of core-hole ...
Vladimir Lipp   +3 more
doaj   +1 more source

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