First-Order Perturbation Corrections to the Hartree-Fock Approximation for Helium

1963 ◽  
Vol 132 (5) ◽  
pp. 2118-2122 ◽  
Author(s):  
A. W. Weiss ◽  
J. B. Martin
Keyword(s):  
Order Perturbation ◽  
First Order ◽  
Hartree Fock ◽  
First Order Perturbation

Spin–spin interaction in f5 electron configurations

1969 ◽  
Vol 47 (24) ◽  
pp. 2779-2783 ◽  
Author(s):  
Gulzari Malli ◽  
K. M. S. Saxena
Keyword(s):  
Order Perturbation ◽  
Spin Splitting ◽  
Spin Interaction ◽  
Electron Configuration ◽  
Matrix Elements ◽  
First Order ◽  
Hartree Fock ◽  
Splitting Factor ◽  
Complete Matrix ◽  
First Order Perturbation

The complete matrix of the spin–spin interaction for the f5 electron configuration is evaluated for general usage. The results of the diagonal matrix elements are tabulated here in terms of the corresponding spin–spin splitting factor for usage in the first-order perturbation calculations. These are used to evaluate the Hartree–Fock values of the splitting factors for Pm(4f5), Sm3+ (4f5), Tb(4f9), and Dy3+ (4f9).

Note on Interference Effects in Two-Step Reaction Processes

1975 ◽  
Vol 53 (23) ◽  
pp. 2590-2592
Author(s):  
J. Cejpek ◽  
J. Dobeš
Keyword(s):  
Perturbation Theory ◽  
Point Of View ◽  
Order Perturbation ◽  
Interference Effects ◽  
Qualitative Explanation ◽  
First Order ◽  
One Step ◽  
Step Transition ◽  
Reaction Processes ◽  
First Order Perturbation

The reaction processes in which a one-step transition is forbidden are analyzed from the point of view of the first order perturbation theory. The interference between two competing two-step reaction paths is found to be always constructive. A qualitative explanation of the experimentally observed reaction intensities is presented.

Sign in / Sign up

Export Citation Format

Share Document