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DENSITY FUNCTIONAL FORMALISM: I. FI...

Louisiana State University and Agricultural & Mechanical College.

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DENSITY FUNCTIONAL FORMALISM: I. FINITE TEMPERATURE THEORY. II. AN 'ATOM' IN A HOT, DENSE PLASMA.

Record Type:	Electronic resources : Monograph/item
Title/Author:	DENSITY FUNCTIONAL FORMALISM: I. FINITE TEMPERATURE THEORY. II. AN 'ATOM' IN A HOT, DENSE PLASMA./
Author:	GUPTA, UDAY.
Description:	152 p.
Notes:	Source: Dissertation Abstracts International, Volume: 42-11, Section: B, page: 4464.
Contained By:	Dissertation Abstracts International42-11B.
Subject:	Physics, Fluid and Plasma. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=8207824

DENSITY FUNCTIONAL FORMALISM: I. FINITE TEMPERATURE THEORY. II. AN 'ATOM' IN A HOT, DENSE PLASMA.
GUPTA, UDAY.

DENSITY FUNCTIONAL FORMALISM: I. FINITE TEMPERATURE THEORY. II. AN 'ATOM' IN A HOT, DENSE PLASMA. - 152 p.

Source: Dissertation Abstracts International, Volume: 42-11, Section: B, page: 4464.

Thesis (Ph.D.)--Louisiana State University and Agricultural & Mechanical College, 1981.

The generalization of the zero temperature local density functional theory of inhomogeneous electron systems to finite temperature ensembles is discussed. A local exchange-correlation potential, V(,xc), needed for a finite temperature Kohn-Sham scheme, is developed based on the investigation of first-order exchange and 'ring'-diagram contribution to correlation effects for a wide range of electron densities and temperature. Comparison is made with existing results in the fully degenerate and non-degenerate limits. In the intermediate degeneracy region, the correlation effect is found to be enhanced--the importance of this for various physical systems is pointed out. An application of V(,xc) is made to illustrate the effect on Kohn-Sham eigenvalues for a neon impurity embedded in a dense, laser plasma, and compared with corresponding self-consistent Hartree results. A fully self-consistent calculation of Perrot using our V(,xc) for a proton in a electron gas is also discussed.Subjects--Topical Terms:

1018402
Physics, Fluid and Plasma.

DENSITY FUNCTIONAL FORMALISM: I. FINITE TEMPERATURE THEORY. II. AN 'ATOM' IN A HOT, DENSE PLASMA.
LDR:02543nmm 2200241 a 45 001 875445
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008 100826s1981 d
035 $a (UMI)AAI8207824
035 $a AAI8207824
040 $a UMI $c UMI
100 1 $a GUPTA, UDAY. $3 1044709
245 1 0 $a DENSITY FUNCTIONAL FORMALISM: I. FINITE TEMPERATURE THEORY. II. AN 'ATOM' IN A HOT, DENSE PLASMA.
300 $a 152 p.
500 $a Source: Dissertation Abstracts International, Volume: 42-11, Section: B, page: 4464.
502 $a Thesis (Ph.D.)--Louisiana State University and Agricultural & Mechanical College, 1981.
520 $a The generalization of the zero temperature local density functional theory of inhomogeneous electron systems to finite temperature ensembles is discussed. A local exchange-correlation potential, V(,xc), needed for a finite temperature Kohn-Sham scheme, is developed based on the investigation of first-order exchange and 'ring'-diagram contribution to correlation effects for a wide range of electron densities and temperature. Comparison is made with existing results in the fully degenerate and non-degenerate limits. In the intermediate degeneracy region, the correlation effect is found to be enhanced--the importance of this for various physical systems is pointed out. An application of V(,xc) is made to illustrate the effect on Kohn-Sham eigenvalues for a neon impurity embedded in a dense, laser plasma, and compared with corresponding self-consistent Hartree results. A fully self-consistent calculation of Perrot using our V(,xc) for a proton in a electron gas is also discussed.
520 $a A connection is made between the finite temperature Kohn-Sham effective potential with the temperature dependent Lindhard screened potential. This gives a scheme to investigate the electron screening effects in the intermediate degeneracy region and interpolates between the well-known Thomas-Fermi screening in the degenerate limit and Debye-screening in the classical limit. Applications are made to study the screened energy levels for charged impurities in dense, hot laser plasmas and in highly doped semiconductors. An estimate of Mott transition is also obtained. Results are compared with other screening models. The significance for plasma diagnostics of the striking differences obtained in the results is pointed out.
590 $a School code: 0107.
650 4 $a Physics, Fluid and Plasma. $3 1018402
690 $a 0759
710 2 0 $a Louisiana State University and Agricultural & Mechanical College. $3 783779
773 0 $t Dissertation Abstracts International $g 42-11B.
790 $a 0107
791 $a Ph.D.
792 $a 1981
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=8207824