Spectral Intensities for the Emission |^4S_{3/2}Γ_8〉 → |^4I_{15/2}Γ〉in the Cs_2NaErCl_6

• Authors: R. Acevedo , A. Soto-Bubert , G. Navarro , T. Meruane , W. Stręk
• Languages of publication: EN

Abstracts

EN

We report explicit vibronic intensity calculations for the |^4S_{3/2}Γ_8> → |^4I_{15/2}Γ>excitations in the Cs_2NaErCl_6 elpasolite-type systems, based upon new and updated experimental data, obtained from optical absorption measurements made at 10 K, in the energy range from 6,000 up to 26,000 cm^{-1}. Our calculation model is a generalization of the vibronic crystal field-ligand polarization method and the calculation is performed using a minimum set of adjustable parameters - all and each of them have a clear physical meaning. Our strategy was chosen so as to make a significant distinction with previous calculations, performed by other authors, who have worked out a model originated from a supra-parameterized scheme, within the framework of the superposition model of Newman. Throughout the course of the current work, it is shown that our model is suitable to handle this kind of calculations and also that the numerical results obtained are in fairly good agreement with experiment.

Keywords

EN

32.70.Cs

Discipline

• 32.70.Cs: Oscillator strengths, lifetimes, transition moments

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2004
• Volume: 105
• Issue: 3
• Pages: 233-251

Dates

published

2004-03

received

2003-11-05

accepted

2004-01-12

Contributors

author

R. Acevedo

• Departamento de Quimica Basica, Facultad de Ciencias Fisicas y Matematicas Universidad de Chile, Beauchef 850, Casilla 2777, Santiago, Chile

author

A. Soto-Bubert

• Departamento de Quimica Basica, Facultad de Ciencias Fisicas y Matematicas Universidad de Chile, Beauchef 850, Casilla 2777, Santiago, Chile

author

G. Navarro

• Instituto de Ciencias Básicas, Facultad de Ingeniería, Universidad Diego Portales, Av. Ejército No. 441, Casilla 298-V, Santiago, Chile

author

T. Meruane

• Departamento de Quimica, Universidad Metropolitana de Ciencias de la Educacion, Av. J.P. Alessandri 774, Casilla 147-C, Santiago, Chile

author

W. Stręk

• Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Okólna 2, 50-422 Wrocław, Poland

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Identifiers

DOI

10.12693/APhysPolA.105.233