Quantum defect orbital

Relativistic Quantum Defect Orbital (RQDO) calculations, with and without explicit account for core-valence correlation, have been performed on several electronic transitions in halogen atoms, for which transition probability data are particularly scarce. For the atomic species iodine, we supply the only available oscillator strengths at the moment. In our calculations of /-values we have followed either the LS or I coupling schemes. 

The relativistic version (RQDO) of the quantum defect orbital formalism has been employed to obtain the wavefunctions required to calculate the radial transition integral. The relativistic quantum defect orbitals corresponding to a state characterized by its experimental energy are the analytical solutions of the quasirelativistic second-order Dirac-like equation [8]... 

The relativistic quantum defect orbitals lead to closed-form analytical expressions for the transition integrals. This allows us to calculate transition probabilities and oscillator strengths by simple algebra and with little computational effort. 

Extension of the Relativistic Quantum Defect Orbital Method to the Treatment of Many-Valence Electron Atoms. Atomic Transitions in Ar II... 

Formulae for calculating transition probabilities in both the LS and Jcl coupling schemes, within the context of the Relativistic Quantum Defect Orbital (RQDO) formalism, which yields one-electron functions, are given and applied to the complex atomic system Ar 11. The application of a given coupling scheme to the different energy levels dealt with is justified. 

Extension of the Relativistic Quantum Defect Orbital Method... 

The Relativistic Quantum Defect Orbital (RQDO) method... 

Kwato Njock et al. [15] have presented more recently a relativistic generalisation of the quantum defect orbital method. This formulation has some resemblances with the previous one [1,2] but is, in our view, unnecessarily complicated. 

I. Martin, From The Relativistic Quantum Defect Orbital Method and Some of its Applications, in R. Me Weeny and others (Eds.), Quantum Systems in Chemistry and Physics. Trends in Methods and Applications, Kluwer Academic Publishers, Dordrecht, 51 (1997). 

Extension of the relativistic quantum defect orbital method to the treatment 273 of many-valence electron atoms. Atomic transitions in Ar II... 

We shall next summarise the basic approaches that justify the above features, to then illustrate some of them on various atomic and molecular systems with the results of some calculations performed by us with either the Relativistic Quantum Defect Orbital (RQDO) formalism [6, 7] or the non-relativistic version of this method (QDO) [8, 9]. 

In this and die remaining tables, A (B) denotes A. 10 a Relativistic Quantum Defect Orbital Method, this work bVemeretal. [18]... 

The Quantum Defect Orbital (QDO) method has been applied to the study of transition probabilities in the oxonium Rydberg radical H30. Absorption oscillator strengths and Einstein emission coefficients are reported and compared with the results of an earlier, simplified, molecular version of QDO method. 

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