Results 1 to 10 of about 9,838,903 (305)

Electron Impact Excitation of S III: An Assessment [PDF]

Atoms, 2019
In a recent paper, Tayal et al. (Astrophys. J. Suppl. 2019, 242, 9) reported results for energy levels, radiative rates (A-values), and effective collision strengths ( Υ ) for transitions among the 198 levels of Si-like S III.
Kanti M. Aggarwal
doaj   +4 more sources

Excitation of the 2S State of Atomic Hydrogen by Electron Impact

Atoms, 2018
The excitation cross sections of the 2S state of atomic hydrogen at 10 low incident electron energies (10.30 and 54.5 eV) have been calculated using the variational polarized method. Nine partial waves are used to get convergence of cross sections in the
Anand K. Bhatia
doaj   +3 more sources

Electron Impact Excitation of Ge-like Te²⁰⁺–Cd¹⁶⁺ Ions

Atoms, 2022
We study electron impact excitation of dipole allowed transitions in the extreme ultraviolet range—8–55 nm—for the germanium isoelectronic sequence Te20+–Cd16+.
Pooja Malker, Lalita Sharma
doaj   +1 more source

Iodine molecule covalente excited states as determined by threshold electron spectrometry [PDF]

Journal of the Serbian Chemical Society, 2000
The iodine molecule has been investigated by a threshold electron spectrometer in the incident electron energy range from 1.00 eV to 3.5eV. From the threshold electron spectrum contributions for excitation of three states known from optical spectrometry ...
SLOBODAN MACURA, JOZO JURETA, MILAN KUREPA   +2 more
doaj   +2 more sources

Excitation of the 2P State of Atomic Hydrogen by Electron Impact

Atoms, 2022
The excitation cross sections of the 2P state of atomic hydrogen at low incident electron energies (from 0.755 to 3.5 Ry) were calculated using the variational polarized orbital method.
Anand K. Bhatia
doaj   +1 more source

Electron-impact vibrational excitation of cyclopropane [PDF]

The Journal of Chemical Physics, 2015
We report a very detailed test of the ab initio discrete momentum representation (DMR) method of calculating vibrational excitation of polyatomic molecules by electron impact, by comparison of its results with an extensive set of experimental data, covering the entire range of scattering angles from 10∘ to 180∘ and electron energies from 0.4 to 20 eV ...
Curík Roman, Cársky Petr, Allan Michael   +2 more
openaire   +5 more sources

Excitations of the nS States of Atomic Hydrogen by Electron Impact, Excitation Rate Coefficients, and Phase Shifts: Comparison with Positron Impact Excitation

Atoms, 2021
The excitation cross-sections of the nS states of atomic hydrogen, n = 2 to 6, by electron impact on the ground state of atomic hydrogen were calculated using the variational polarized-orbital method at various incident electron energies in the range 10 ...
Anand K. Bhatia
doaj   +1 more source

Electron-impact Excitation of Pt i–iii: The Importance of Metastables and Collision Processes in Neutron Star Merger and Laboratory Plasmas

The Astrophysical Journal Supplement Series, 2023
The detection of a gravitational-wave signal and subsequent electromagnetic transient from a neutron star merger in 2017 is consistent with expectations of neutron star mergers as an r -process element production site.
S. J. Bromley, M. McCann, S. D. Loch, C. P. Ballance   +3 more
doaj   +1 more source

The Excitation of the 3D and 4D States of Atomic Hydrogen by Electron Impact

Atoms, 2023
The excitation cross-sections of the 3D and 4D states of atomic hydrogen at low incident energies (from 0.90 to 5.00 Ry) were calculated using the variational polarized orbital method, which is also called the hybrid theory. Up to 12 partial waves (L = 2
Anand K. Bhatia
doaj   +1 more source

Atomic Lithium Excitation by Electron Impact

Journal of Kufa-Physics, 2019
Bethe approximation had been used to compute the excitation cross section in term of the diploe oscillator strength for some allowed transitions between energy levels of Li-atom collide with electrons with impact energy range (2-2000) eV. We also compute
Rabab M. Abdul Hassan, Alaa A. Khalaf
doaj   +1 more source