Results 31 to 40 of about 892,415 (299)

Ab Initio Determination of Atomic Structure and Stark Broadening Parameters: Pb IV and Recent Results

open access: yesOpen Astronomy, 2011
We present a review of our previous ab initio calculations of Stark broadening parameters using semi-classical perturbation method for the calculation of Stark widths and shifts, and the SUPERSTRUCURE (SST) code for the determination of atomic structure.
Hamdi R.   +3 more
doaj   +1 more source

Prediction of forbidden ultraviolet and visible emissions in comet 67P/Churyumov-Gerasimenko

open access: yes, 2015
Remote observation of spectroscopic emissions is a potential tool for the identification and quantification of various species in comets. CO Cameron band (to trace \cod) and atomic oxygen emissions (to trace H$_2$O and/or CO$_2$, CO) have been used to ...
Bhardwaj, Anil   +2 more
core   +1 more source

Atomic electron tomography in three and four dimensions [PDF]

open access: yes, 2020
Atomic electron tomography (AET) has become a powerful tool for atomic-scale structural characterization in three and four dimensions. It provides the ability to correlate structures and properties of materials at the single-atom level.
Ercius, P, Miao, J, Yang, Y, Zhou, J
core  

Calculated oscillator strengths and transition probabilities of singly ionised nickel (Ni II)

open access: yesAstronomy & Astrophysics
Aims. This work reports calculated transition probabilities for spectral lines of singly ionised nickel (Ni II) incorporating newly determined experimental energy levels, addressing critical gaps in atomic data required for astrophysical spectroscopy and
Clear Christian P.   +2 more
doaj   +1 more source

Teleportation of an atomic ensemble quantum state

open access: yes, 2004
We propose a protocol to achieve high fidelity quantum state teleportation of a macroscopic atomic ensemble using a pair of quantum-correlated atomic ensembles.
A. Bramati   +4 more
core   +2 more sources

Asymmetrical two-atom entanglement in a coated microsphere [PDF]

open access: yes, 2006
We study evolution of entanglement of two two-level atoms placed inside a multilayered microsphere. We show that due to inhomogeneity of the field modes this entanglement essentially depends on the atomic positions (asymmetrical entanglement) and also on
A.B. Klimov   +38 more
core   +1 more source

Electron energy-loss spectroscopy of autoionizing states of zinc [PDF]

open access: yesSerbian Astronomical Journal, 2004
Autoionizing energy-loss spectra of Zn from 10.8 to 12.5 eV, for incident electron energies between 20 and 100 eV, have been recorded at scattering angles from 0° to 10°.
Predojević B.   +4 more
doaj   +1 more source

Atomic Processes in Planetary Nebulae and H II Regions

open access: yes, 2008
Spectroscopic studies of Planetary Nebulae (PNe) and H {\sc ii} regions have driven much development in atomic physics. In the last few years the combination of a generation of powerful observatories, the development of ever more sophisticated spectral ...
Anderson E   +48 more
core   +1 more source

A Review of Recent Developments in Atomic Processes for Divertors and Edge Plasmas

open access: yes, 1995
The most promising concepts for power and particle control in tokamaks and other fusion experiments rely upon atomic processes to transfer the power and momentum from the edge plasma to the plasma chamber walls. This places a new emphasis on processes at
Afrosimov   +86 more
core   +1 more source

Hydrogen Recombination with Multilevel atoms [PDF]

open access: yes, 2010
Hydrogen recombination is one of the most important atomic processes in many astrophysical objects such as Type II supernova (SN~II) atmospheres, the high redshift universe during the cosmological recombination era, and H II regions in the ...
Chluba   +28 more
core   +1 more source

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