Results 1 to 10 of about 67,045 (182)

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

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

Timed exercise modulates inter-coupling strength between evening and morning oscillators in mice [PDF]

open access: yesnpj Biological Timing and Sleep
The present study examined the effect of daily exposure to a novel cage equipped with a running wheel (NCRW) at two different times of day on the coupling strength between the evening (E) and morning (M) oscillators in nocturnal rodents. Adult male C57BL/
Nagomi Miyagi   +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

Localization-limited exciton oscillator strength in colloidal CdSe nanoplatelets revealed by the optically induced stark effect

open access: yesLight: Science & Applications, 2021
2D materials are considered for applications that require strong light-matter interaction because of the apparently giant oscillator strength of the exciton transitions in the absorbance spectrum. Nevertheless, the effective oscillator strengths of these
Pieter Geiregat   +11 more
doaj   +1 more source

Optical Absorption on Electron Quantum-Confined States of Perovskite Quantum Dots

open access: yesNanomaterials, 2022
In the framework of the dipole approximation, it is shown that in the perovskites quantum dots (QDs) FAPbBr3  and {en} FAPbBr3  interacting with low-intensity light, the oscillator strengths of transitions, as well as the dipole moments allowing ...
Serhii I. Pokutnii, Andrzej Radosz
doaj   +1 more source

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