Oscillator strength distribution in the alkaline-earth elements

1988 ◽  
Vol 66 (1) ◽  
pp. 29-33 ◽  
Author(s):  
Carmen Barrientos ◽  
Inmaculada Martin
Keyword(s):  
Oscillator Strength ◽  
Alkaline Earth ◽  
Strength Distribution ◽  
Quantum Defect ◽  
Interference Effects ◽  
Electron Transitions ◽  
Alkaline Earth Elements ◽  
The Continuum

The oscillator strength distribution between the discrete and continuous regions of the spectra of Mg, Ca, Sr, and Ba has been obtained. Computations have been carried out through the Quantum Defect Orbital (QDO) method, with explicit introduction of the two-electron transitions that lead to resonances in the spectra of the last three elements. Interference effects between excitations to autoionizing levels and to the continuum have been ignored.

Oscillator-strength distribution in the discrete and continuous spectra of the alkali elements

1987 ◽  
Vol 65 (4) ◽  
pp. 435-437 ◽  
Author(s):  
Carmen Barrientos ◽  
Inmaculada Martin
Keyword(s):  
Oscillator Strength ◽  
Cross Sections ◽  
Strength Distribution ◽  
Quantum Defect ◽  
Ionization Threshold ◽  
Spectral Series ◽  
Discrete And Continuous Spectra ◽  
Alkali Elements

The oscillator-strength distribution between the discrete and continuous regions of the spectrum of the alkali elements Li, Na, K, Rb, and Cs has been obtained by following the quantum defect orbital (QDO) procedure. Continuity across the spectral-series limit has been found, and ionization-threshold cross sections are also reported.

Quantum defect orbital calculations on the alkaline-earth elements: oscillator strengths and photoionization cross sections

1985 ◽  
Vol 63 (11) ◽  
pp. 1441-1445 ◽  
Author(s):  
Carmen Barrientos ◽  
Inmaculada Martin
Keyword(s):  
Cross Sections ◽  
Alkaline Earth ◽  
Experimental Results ◽  
Quantum Defect ◽  
Oscillator Strengths ◽  
Alkaline Earth Elements ◽  
Experimental Values

The quantum defect orbital (QDO) formalism is applied to the computation of oscillator strengths of Mg, Ca, Sr, and Ba and photoionization cross sections of Mg and Ca. For [Formula: see text] transitions, QDO oscillator strengths reproduce fairly well the experimental values both in magnitude and trend. Photoionization cross sections for ns2 → nsεp transitions agree well with experimental results where no autoionization resonances are present. The results of both sets of calculations are at least comparable in quality to those of other more complex procedures.

Bis(trimethylsilyl)methyl Derivatives of Calcium, Strontium and Barium: Potentially Useful Dialkyls of the Heavy Alkaline Earth Elements

2008 ◽  
Vol 14 (36) ◽  
pp. 11292-11295 ◽  
Author(s):  
Mark R. Crimmin ◽  
Anthony G. M. Barrett ◽  
Michael S. Hill ◽  
Dugald J. MacDougall ◽  
Mary F. Mahon ◽  
...  
Keyword(s):  
Alkaline Earth ◽  
Alkaline Earth Elements ◽  
Methyl Derivatives ◽  
Derivatives Of

Measurement of Atomic Oscillator Strength Distribution from the Excited States

2008 ◽  
Author(s):  
Shahid Hussain ◽  
M. Saleem ◽  
M. A. Baig ◽  
Marco Antonio Gigosos ◽  
Manuel Ángel González
Keyword(s):  
Oscillator Strength ◽  
Excited States ◽  
Strength Distribution
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