Results 1 to 10 of about 71,030 (229)

Optical properties of GaAs/Al_xGa_{1-x}As/GaAs quantum dot with off-central impurity driven by electric field [PDF]

open access: yesCondensed Matter Physics, 2018
The effect of a constant electric field and donor impurity on the energies and oscillator strengths of electron intraband quantum transitions in double-well spherical quantum dot GaAs/Al_xGa_{1-x}As/GaAs is researched.
V.A. Holovatsky   +2 more
doaj   +5 more sources

The 13th International Colloquium on Atomic Spectra and Oscillator Strengths for Astrophysical and Laboratory Plasmas [PDF]

open access: goldAtoms, 2020
The 13th International Colloquium on Atomic Spectra and Oscillator Strengths for Astrophysical and Laboratory Plasmas (ASOS2019), co-hosted by Fudan and Lund Universities, was held at Fudan University from 23–27 June 2019 [...]
Jun Xiao, Tomas Brage, Roger Hutton
doaj   +2 more sources

Oscillator strengths with pseudopotentials [PDF]

open access: yesPhysical Review A, 1998
The time-dependent local-density approximation (TDLDA) is shown to remain accurate in describing the atomic response of IB elements under the additional approximation of using pseudopotentials to treat the effects of core electrons. This extends the work
A. Rubio   +29 more
core   +2 more sources

Radiative Rates and Electron Impact Excitation Rates for Transitions in He II [PDF]

open access: yesAtoms, 2017
We report calculations of energy levels, radiative rates, collision strengths and effective collision strengths for transitions among the lowest 25 levels of the n ≤ 5 configurations of He II.
Kanti M. Aggarwal   +3 more
doaj   +4 more sources

Ab-Initio Calculations of Level Energies, Oscillator Strengths and Radiative Rates for E1 Transitions in Beryllium-Like Iron [PDF]

open access: goldAtoms, 2015
In the present work, energy levels, oscillator strengths, radiative rates and wavelengths of Be-like iron (Fe\(^{22+}\)) from ab-initio calculations using the multiconfiguration Dirac-Hartree-Fock method are presented.
Ahmed Abou El-Maaref   +2 more
doaj   +2 more sources

On the modifications of oscillator strengths and damping constants of Fe I spectral lines from 500 nm to 510 nm [PDF]

open access: yesSerbian Astronomical Journal, 2004
We modified oscillator strengths and enhancement factors of van der Waals damping constants for 84 moderately strong and weak neutral iron spectral lines between 500 nm and 510 nm, by fitting the solar synthetic spectrum to the observed one.
Čeki A., Latković O., Vince Ištvan I.
doaj   +1 more source

A CASSCF/CSAPT2 Study on the Reaction Pathways From HOSS to HSSO Radicals [PDF]

open access: yesE3S Web of Conferences, 2020
In this paper, we used the CASSCF/CASPT2 method to study the low-lying electronic states of the HOSS and HSSO radicals. Based on the Cs and C1 symmetries, the geometrical parameters, total energies, configurations, oscillator strengths, excitation ...
Zhang Haifeng   +3 more
doaj   +1 more source

Spectral properties of a broadband far infrared photodetector with a new design of active region

open access: yesCondensed Matter Physics, 2023
A quantum theory of spectral parameters and oscillator strengths of quantum transitions in an active region, which contains cascades of wide quantum wells with a complicated potential profile is developed.
M. V. Tkach   +3 more
doaj   +1 more source

Superstructure and Distorted-Wave Codes and Their Applications

open access: yesAtoms, 2022
There have been many observations of the solar and astrophysical spectra of various ions. The diagnostics of these observations require atomic data that include energy levels, oscillator strengths, transition rates, and collision strengths.
Anand K. Bhatia
doaj   +1 more source

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