Atomic Structure Parameters in Ionic Systems
Fatma El-Sayed Mahrous Ibrahim;
Abstract
The Multiconfiguration Hartree-Fock method (MCHF) IS used to calculate wavefunctions for some members of the Magnesium isoelectronic sequence, Mg I, AlII , Si III , P IV , S V , Cl VI , Ar VII ,
K VIII, CalX, SeX, TiXI, VXII, CrXIII, MnXIVand Fe XV. Energy levels, oscillator strengths and transition probabilities for transitions among the fine-structure levels of terms belonging to the
3 s 2 , 3 s 3 p , 3 p 2 , 3 s 3 d , 3 s 4 s , 3 p 3 d , 3 s 4 p , 3 s 4 d and 3 p 4 s configurations, of ions belonging to Mg-isoelectronic sequence, are calculated using the MCHF code and Cowan code. The relativistic effects are included through the Breit-Pauli Hamiltonian which consists of the non-relativistic term plus the spin-orbit, spin-other-orbit and spin-spin operators.
A number of configurations with all possible orbitals up to n=4 are
included in these calculations.
The 22 LS configurations 3 s 2 (1 S), 3 s 3 p (1 3 Po ), 3 p 2 (1 S, 3 p, 1 D ) ,
3 S 3d ( 1,3 D), 3 S 4 S (I, 3 S ), 3 p 3d ( 1,3 po, 1,3D 0 , 1,3F"),3 S 4 p ( 1,3 po),
3 s 4 d ( 1 3 D)and 3 p 4 s ( 1• 3 po) give rise to 40 fine-structure levels for each member of the sequence.
The Cowan code and Multiconfiguration Hartree-Fock code (MCHF)
are used to calculate the radiative lifetimes for excited levels of ions belonging to Mg-isoelectronic sequence.
K VIII, CalX, SeX, TiXI, VXII, CrXIII, MnXIVand Fe XV. Energy levels, oscillator strengths and transition probabilities for transitions among the fine-structure levels of terms belonging to the
3 s 2 , 3 s 3 p , 3 p 2 , 3 s 3 d , 3 s 4 s , 3 p 3 d , 3 s 4 p , 3 s 4 d and 3 p 4 s configurations, of ions belonging to Mg-isoelectronic sequence, are calculated using the MCHF code and Cowan code. The relativistic effects are included through the Breit-Pauli Hamiltonian which consists of the non-relativistic term plus the spin-orbit, spin-other-orbit and spin-spin operators.
A number of configurations with all possible orbitals up to n=4 are
included in these calculations.
The 22 LS configurations 3 s 2 (1 S), 3 s 3 p (1 3 Po ), 3 p 2 (1 S, 3 p, 1 D ) ,
3 S 3d ( 1,3 D), 3 S 4 S (I, 3 S ), 3 p 3d ( 1,3 po, 1,3D 0 , 1,3F"),3 S 4 p ( 1,3 po),
3 s 4 d ( 1 3 D)and 3 p 4 s ( 1• 3 po) give rise to 40 fine-structure levels for each member of the sequence.
The Cowan code and Multiconfiguration Hartree-Fock code (MCHF)
are used to calculate the radiative lifetimes for excited levels of ions belonging to Mg-isoelectronic sequence.
Other data
| Title | Atomic Structure Parameters in Ionic Systems | Other Titles | بارامترات التركيب الذرى فى الأنظمة الأيونية | Authors | Fatma El-Sayed Mahrous Ibrahim | Keywords | Atomic Energy Levels; Multiconfiguration Hartree-Fock method; Configuration Interaction (CI); Parametric Theory; Least Squares method; Radiative Transitions; Mg-Isoelectronic Sequence; Wavelengths; Wavenumbers; Transition Probabilities; Oscillator Strengths; Radiative Lifetimes. | Issue Date | 2007 |
Recommend this item
Similar Items from Core Recommender Database
Items in Ain Shams Scholar are protected by copyright, with all rights reserved, unless otherwise indicated.