CLUSTER-EXPANSION CORRECTIONS OF THE DEBYE-HUCKEL PAIR-CORRELATION FUNCTION FOR IONIZED GASES. Technical Report No. 1
Technical Report
·
OSTI ID:4650621
The Kolb-Griem theory of spectral line broadening occurring in plasmas is discussed; emphasis is placed on the importance of the electric microfield distribution. The Mozer-Baranger calculation of the electric microfield distribution in a plasma is outlined; its dependence upon the nature of the component particle correlations is shown. The electrons and ions must be treated separately because of their inherent differences; the electrons interact through a Coulomb field, whereas the ions interact with shielded fields. The Salpeter cluster-expansion technique is considered in detail. It is applied to the determination of pair correlation functions and the corresponding potentials of mean force for both Coulomb and shielded fields. The calculations are made up to second order in complexity. Corrected expressions for the potentials of mean force are compared with the corresponding Debye-Huckel results. Significant differences are found particularly for the shielded-field cases. It is demonstrated that use of the corrected pair-correlation functions in the MozerBaranger microfield calculation could significantly alter the results. The possibility of including such corrected results in the line-broadening theory is considered; it is indicated that the influence of these corrections on the profile of the Lyman- BETA line should be experimentally observable. 53 references. (auth)
- Research Organization:
- Johns Hopkins Univ., Baltimore
- NSA Number:
- NSA-17-035026
- OSTI ID:
- 4650621
- Report Number(s):
- NP-13059
- Country of Publication:
- United States
- Language:
- English
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