Results 41 to 50 of about 7,460,073 (366)

Self-interaction correction to density-functional approximations for many-electron systems

open access: yes, 1981
exchange and correlation, are not. We present two related methods for the self-interaction correction (SIC) of any density functional for the energy; correction of the self-consistent one-electron potenial follows naturally from the variational principle.
J. Perdew, A. Zunger
semanticscholar   +1 more source

Statistical process control to monitor use of a web‐based autoplanning tool

open access: yesJournal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022
Abstract Purpose To investigate the use of statistical process control (SPC) for quality assurance of an integrated web‐based autoplanning tool, Radiation Planning Assistant (RPA). Methods Automatically generated plans were downloaded and imported into two treatment planning systems (TPSs), RayStation and Eclipse, in which they were recalculated using ...
Hunter Mehrens   +5 more
wiley   +1 more source

Xfel: Mighty view into microworld [PDF]

open access: yesTehnika, 2014
European x-ray free electron laser, i.e. company and institute European XFEL GmbH (EuXFEL), represents the center point of contemporary particle physics, as well as precise, sophisticated and advanced engineering.
Ekmedžić Marko Ž., Rašuo Boško R.
doaj   +1 more source

Electronic structure of MnSi: The role of electron-electron interactions

open access: yesPhysical Review B, 2006
We present an experimental study of the electronic structure of MnSi. Using x-ray absorption spectroscopy XAS, x-ray photoemission, and x-ray fluorescence, we provide experimental evidence that MnSi has a mixed valence ground state. We show that self-consistent local density approximation supercell calculations cannot replicate the XAS spectra of MnSi,
Carbone F   +9 more
openaire   +5 more sources

Treatment planning with a 2.5 MV photon beam for radiation therapy

open access: yesJournal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022
Abstract Purpose The shallow depth of maximum dose and higher dose fall‐off gradient of a 2.5 MV beam along the central axis that is available for imaging on linear accelerators is investigated for treatment of shallow tumors and sparing the organs at risk (OARs) beyond it.
Navid Khaledi   +5 more
wiley   +1 more source

General Analysis of the Reaction e^+ + e^- → N + Ñ + π^0

open access: yesEast European Journal of Physics, 2022
The general analysis of the reaction , in the case of longitudinally polarized electron beam, has been performed in the one-photon-nnihilation approximation, accounting for the polarization states of the final nucleon.
Gennadiy I. Gakh   +3 more
doaj   +1 more source

Long-Range Balanced Electron- and Hole-Transport Lengths in Organic-Inorganic CH3NH3PbI3

open access: yesScience, 2013
Unrestricted Travel in Solar Cells In the past 2 years, organolead halide perovskites have emerged as a promising class of light-harvesting media in experimental solar cells, but the physical basis for their efficiency has been unclear (see the ...
G. Xing   +7 more
semanticscholar   +1 more source

Electrons in Glass [PDF]

open access: yesScience, 1975
An outline is given of some of the steps which in the last ten years have led to an understanding of many of the properties of conduction and valence bands in non-crystalline materials. The concept of a mobility edge is described and some of the experimental evidence for its existence.
openaire   +8 more sources

Energy transfer of intrinsic electronic excitation to impurities in the CaSO4 − Mn crystal

open access: yesEurasian Journal of Physics and Functional Materials, 2021
The nature of the impurity emission center and the energy transfer mechanisms from intrinsic electronic excitations to the Mn2+ impurity centers in the CaSO4 − Mn crystal have been investigated.
T.N. Nurakhmetov   +11 more
doaj   +1 more source

The transport parameters of an electron swarm and electron energy distribution in Xe, He and (Xe-He) mixtures using Boltzmann equation [PDF]

open access: yesKirkuk Journal of Science, 2012
The Boltzmann transport equation is used to calculate the electron energy distribution function (EEDF) and the transport parameters in pure Xe, He and their mixtures. The electron swarm parameters are evaluated in the range ( ) V.cm2.
Gulala Muhammad Faraj
doaj   +1 more source

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