Abstract

A simplified method to calculate the electronic partition functions and the correspondingthermodynamic properties of atomic species is presented and applied to C(I) up to C(VI) ions. Themethod consists in reducing the complex structure of an atom to three lumped levels. The groundlevel of the lumped model describes the ground term of the real atom, while the second lumpedlevel represents the low lying states and the last one groups all the other atomic levels. It is alsoshown that for the purpose of thermodynamic function calculation, the energy and the statisticalweight of the upper lumped level, describing high-lying excited atomic states, can be satisfactorilyapproximated by an analytic hydrogenlike formula. The results of the simplified method are ingood agreement with those obtained by direct summation over a complete set (i.e., including allpossible terms and configurations below a given cutoff energy) of atomic energy levels. Themethod can be generalized to include more lumped levels in order to improve the accuracy.

Autore Pugliese

• Colonna Gianpiero

Tutti gli autori

• G. D'Ammando; G. Colonna; M. Capitelli

Titolo volume/Rivista

Physics of plasmas

Anno di pubblicazione

2013

ISSN

1089-7674

ISBN

Non Disponibile

Numero di citazioni Wos

Nessuna citazione

Ultimo Aggiornamento Citazioni

Non Disponibile

Numero di citazioni Scopus

Non Disponibile

Ultimo Aggiornamento Citazioni

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Settori ERC

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Codici ASJC

Non Disponibile