Calculation of doubly excited 1Se states of Li+ using a B-spline based spectral approach of configuration type combined with the complex rotation method

2019 ◽  
Vol 158 ◽  
pp. 83-86 ◽  
Author(s):  
Marc-André Albert ◽  
Stéphane Laulan ◽  
Samira Barmaki
Keyword(s):  
Spectral Approach ◽  
B Spline ◽  
Complex Rotation ◽  
Rotation Method ◽  
Doubly Excited

Perturbative calculation of the ac Stark effect by the complex rotation method

1991 ◽  
Vol 43 (11) ◽  
pp. 6272-6283 ◽  
Author(s):  
Liwen Pan ◽  
K. T. Taylor ◽  
Charles W. Clark
Keyword(s):  
Stark Effect ◽  
Perturbative Calculation ◽  
Complex Rotation ◽  
Rotation Method ◽  
Ac Stark Effect

scholarly journals Calculations of Resonance Parameters for the Doubly Excited 1P° States in Ps− Using Exponentially Correlated Wave Functions

Atoms ◽  
2019 ◽  
Vol 8 (1) ◽  
pp. 1 ◽  
Author(s):  
Sabyasachi Kar ◽  
Yew Kam Ho
Keyword(s):  
Feshbach Resonance ◽  
Wave Functions ◽  
Negative Ion ◽  
Shape Resonance ◽  
Resonance States ◽  
Resonance Parameters ◽  
Rotation Method ◽  
Resonance Energies ◽  
Doubly Excited ◽  
Coordinate Rotation

Recent observations on resonance states of the positronium negative ion (Ps−) in the laboratory created huge interest in terms of the calculation of the resonance parameters of the simple three-lepton system. We calculate the resonance parameters for the doubly excited 1P° states in Ps− using correlated exponential wave functions based on the complex-coordinate rotation method. The resonance energies and widths for the 1P° Feshbach resonance states in Ps− below the N = 2, 3, 4, 5 Ps thresholds are reported. The 1P° shape resonance above the N = 2, 4 Ps thresholds are also reported. Our predications are in agreement with the available results. Few Feshbach resonance parameters below the N = 4 and 5 Ps thresholds have been reported in the literature. Our predictions will provide useful information for future resonance experiments in Ps−.

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.

Complex-rotation method for spin-induced autoionization

1987 ◽  
Vol 36 (4) ◽  
pp. 1948-1951 ◽  
Author(s):  
Brian F. Davis ◽  
Kwong T. Chung
Keyword(s):  
Complex Rotation ◽  
Rotation Method

Saddle-point complex-rotation method for resonances

1982 ◽  
Vol 26 (6) ◽  
pp. 3278-3282 ◽  
Author(s):  
Kwong T. Chung ◽  
Brian F. Davis
Keyword(s):  
Saddle Point ◽  
Complex Rotation ◽  
Rotation Method
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