Dipole transition‐matrix elements and oscillator strengths for the C 4+ doubly excited states with Coulomb and screened Coulomb (Debye–Hückel) potentials

2021 ◽  
Author(s):  
Yang Wang ◽  
Baisi Wei ◽  
Sabyasachi Kar ◽  
Yew Kam Ho
Keyword(s):  
Excited States ◽  
Transition Matrix ◽  
Dipole Transition ◽  
Oscillator Strengths ◽  
Matrix Elements ◽  
Doubly Excited States ◽  
Doubly Excited ◽  
Transition Matrix Elements

Energy, fine structure, and transition rate of the doubly excited 3Pe and 3De states for helium

2003 ◽  
Vol 81 (12) ◽  
pp. 1419-1425 ◽  
Author(s):  
X -L Wu ◽  
B -C Gou ◽  
F Wang
Keyword(s):  
Fine Structure ◽  
Variational Method ◽  
Excited States ◽  
Transition Rate ◽  
Oscillator Strengths ◽  
Transition Rates ◽  
Rydberg Series ◽  
Doubly Excited States ◽  
Quantum Numbers ◽  
Doubly Excited

Energies and fine-structure corrections for the doubly excited 3Pe and 3De states of the helium atom are calculated using the Rayleigh–Ritz variational method and the saddle-point variational method with a multiconfiguration-interaction function. The relativistic and mass polarization corrections are included. The oscillator strengths, transition rates, and wavelengths are also calculated. The doubly excited states are grouped into Rydberg series labeled by the quantum numbers K, T, and A to display the systematic regularity along the series. The results are compared with the theoretical and experimental data in the literature. PACS Nos.: 31.15.Pf, 31.25.Jf, 32.70.Cs

Dipole transition-matrix elements of the one-electron heterodiatomic quasimolecules

2005 ◽  
Vol 71 (2) ◽  
Author(s):  
A. Devdariani ◽  
T. M. Kereselidze ◽  
I. L. Noselidze ◽  
E. Dalimier ◽  
P. Sauvan ◽  
...  
Keyword(s):  
Transition Matrix ◽  
Dipole Transition ◽  
Matrix Elements ◽  
Transition Matrix Elements ◽  
The One

Energies and Auger widths of the high-lying double-excited states for Be-like neon

2011 ◽  
Vol 89 (6) ◽  
pp. 697-702 ◽  
Author(s):  
Lin Zhuo ◽  
Bing-Cong Gou ◽  
Feng Wang
Keyword(s):  
Saddle Point ◽  
Excited States ◽  
Transition Probabilities ◽  
Radiative Transition ◽  
Oscillator Strengths ◽  
Doubly Excited States ◽  
Rotation Method ◽  
Resolution Electron ◽  
Doubly Excited ◽  
Theoretical Results

Energies and Auger widths of high-lying doubly-excited states 1s23lnl′ (n = 3–6) for Be-like neon are calculated using a saddle-point variational method and saddle-point complex-rotation method. The relativistic corrections and mass polarization are obtained with first-order perturbation theory. The configuration structure of the high-lying doubly-excited series is checked by relativistic perturbation corrections. The oscillator strengths and radiative transition probabilities are also calculated. Our results of energies and Auger widths are compared with the available theoretical results in the literature. Auger channel energies are compared with those from high-resolution electron spectroscopy. Excellent agreement is obtained in each state.

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