Excitation of H2O+ in e–H2O collisions

1996 ◽  
Vol 74 (5-6) ◽  
pp. 267-278 ◽  
Author(s):  
A. N. Kuchenev ◽  
Yu. M. Smirnov
Keyword(s):  
Cross Sections ◽  
Optical Radiation ◽  
Visible Region ◽  
Optical Excitation ◽  
Inelastic Collisions ◽  
Excitation Threshold ◽  
Excitation Functions ◽  
Excitation Cross Sections

Inelastic collisions, between electrons of low and medium energies and H2O molecules, that give rise to the appearance of optical radiation were studied. An experiment was performed with a gas-filled cell using an extended beam of monokinetic electrons to excite the molecules. A spectrum appearing in the visible region was identified as belonging to H2O+. About 430 excitation cross sections attributed to 10 subbands of the [Formula: see text] system were measured. For a number of lines, measurements were made of the optical excitation functions in the range of energies from the excitation threshold to 200 eV.

scholarly journals Classification of the 5p5nln'l' LSJ energy levels of Cs excited by 30 eV electrons

2015 ◽  
Vol 55 (2) ◽  
Author(s):  
Gintaras Kerevičius ◽  
Alicija Kupliauskienė
Keyword(s):  
Cross Sections ◽  
Electron Spectrum ◽  
Large Scale ◽  
Energy Levels ◽  
Coupling Scheme ◽  
Excitation Threshold ◽  
Angular Momenta ◽  
Excitation Cross Sections ◽  
Configuration Interaction Calculations

Theoretical investigation of the 5p5 nl(L1S1)n'l' LSJ autoionizing states of Cs was performed by using large scale configuration interaction calculations of energy levels, autoionization probabilities and excitation cross sections obtained in the Dirac–Fock–Slater approximation. Classification of calculated energy levels in the LSJ coupling scheme of angular momenta and simulation of the intensities of ejected Auger electron spectrum were performed. The classified energy levels in the region from the excitation threshold up to 17.365 eV and simulated intensity spectrum were used for identification of the experimental ejected-electron spectrum of Cs excited by 30 eV electrons.

Electron-impact excitation of W40+–W43+ ions: Cross-section and polarization

2020 ◽  
Vol 34 (26) ◽  
pp. 2050241
Author(s):  
Neelam Shukla ◽  
Rajesh Srivastava
Keyword(s):  
Electron Impact ◽  
Cross Section ◽  
Cross Sections ◽  
Matrix Theory ◽  
Impact Excitation ◽  
Electron Impact Excitation ◽  
Excitation Threshold ◽  
Plasma Modeling ◽  
Excitation Cross Sections ◽  
Density Matrix Theory

Electron-impact excitation of tungsten ions [Formula: see text] has been studied using the fully relativistic distorted wave (RDW) theory. The excitation cross-sections of selected electric dipole allowed transitions of these ions to be determined for the incident electron energies from the excitation threshold to 20 keV. Further, the calculated cross-section results are fitted with an analytical expression for direct applications in plasma modeling. In addition, using the density matrix theory, the linear polarization of the photons emitted from the excited tungsten ions when decay to their respective ground states is presented.

scholarly journals Comment on “From Coulomb excitation cross sections to nonresonant astrophysical rates in three-body systems: The Ne17 case”

2020 ◽  
Vol 102 (6) ◽  
Author(s):  
J. Casal ◽  
M. Rodríguez-Gallardo ◽  
J. M. Arias ◽  
E. Garrido ◽  
R. de Diego
Keyword(s):  
Cross Sections ◽  
Coulomb Excitation ◽  
Excitation Cross Sections ◽  
Three Body

Partial charge exchange and excitation cross sections for C3+ + H collisions

1991 ◽  
Vol 21 (S1) ◽  
pp. S245-S246
Author(s):  
L. F. Errea ◽  
B. Herrero ◽  
L. M�ndez ◽  
O. M� ◽  
A. Riera
Keyword(s):  
Charge Exchange ◽  
Cross Sections ◽  
Partial Charge ◽  
Excitation Cross Sections
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