Core-polarization effects in the alkali atoms: oscillator-strength calculations

1986 ◽  
Vol 64 (8) ◽  
pp. 867-871 ◽  
Author(s):  
Inmaculada Martin ◽  
Carmen Barrientos
Keyword(s):  
Oscillator Strength ◽  
Dipole Transition ◽  
Quantum Defect ◽  
Oscillator Strengths ◽  
Transition Moment ◽  
Spin Orbit ◽  
Core Polarization ◽  
Polarization Effects ◽  
Alkali Atoms ◽  
Dipole Transition Moment

Oscillator strengths for the alkali group of elements have been computed through the quantum defect orbital (QDO) formalism. Three forms of the dipole transition moment have been employed, two of them accounting for core–valence polarization. Clear improvement is obtained over the nonpolarized calculations for the lighter elements, whereas for K, Rb, and Cs, the additional inclusion of spin–orbit effects is shown to be required.

Systematic trends along the potassium sequence: Study of ns2S–mp2P0 transitions

1991 ◽  
Vol 69 (10) ◽  
pp. 1273-1283 ◽  
Author(s):  
Inmaculada Martin ◽  
Carmen Lavín ◽  
Carmen Barrientos
Keyword(s):  
Dipole Transition ◽  
Quantum Defect ◽  
Oscillator Strengths ◽  
Transition Operator ◽  
Graphical Form ◽  
Isoelectronic Sequence ◽  
Core Polarization ◽  
Polarization Effects ◽  
General Improvement ◽  
Sequence Study

The quantum defect orbital (QDO) method, with the use of a core polarization-corrected dipole transition operator, was employed to determine oscillator strengths for potassium and some of its isoelectronic ions (CaII–CrVI). The inclusion of core-valence polarization effects leads to a general improvement of the QDO f values. Systematic trends of individual oscillator strengths along the isoelectronic sequence are also shown in a graphical form.

Core-polarization effects in subordinate series of the alkali atoms

1989 ◽  
Vol 67 (10) ◽  
pp. 996-1001 ◽  
Author(s):  
Carmen Barrientos ◽  
Inmaculada Martin
Keyword(s):  
Dipole Moment ◽  
Experimental Results ◽  
Quantum Defect ◽  
Oscillator Strengths ◽  
Transition Operator ◽  
Orbital Method ◽  
Effective Dipole Moment ◽  
Core Polarization ◽  
Polarization Effects ◽  
Alkali Atoms

The quantum defect orbital method, including core-polarization effects through an effective dipole-moment transition operator, has been followed to calculate oscillator strengths involving the sharp and diffuse series in the alkali atoms. Comparisons are made among various theoretical and experimental results and those predicted here. It is shown that the formalism adequately describes transitions in subordinate series of the alkali atoms.

Core polarization effects on oscillator strengths in neutral zinc

1992 ◽  
Vol 45 (1) ◽  
pp. 43-48 ◽  
Author(s):  
Tomas Brage ◽  
Charlotte Froese Fischer
Keyword(s):  
Oscillator Strengths ◽  
Core Polarization ◽  
Polarization Effects
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