摘要:

AbstractThe relations between the probabilities of the particle number in a volume which is part of a large system and the space integrals of reduced density functions and cluster functions are investigated. To get into agreement for large volumina with the description by a grand canonical distribution the integrals of the cluster functions must obey generell relations: any cluster integral is a simple combination of the former integral and its derivation with respect to the chemical potential. These equations may serve as a test of various approximation schemes. They can be viewed at as the finite base of the well known cluster series in the theory of real gases. They enable the explicit transition to the particle number distribution of a macroscopic subsystem.

ISSN:0003-3804    

DOI:10.1002/andp.19674740112

出版商:WILEY‐VCH Verlag    

年代:1967

数据来源: WILEY

摘要:

AbstractUsing the method of MORITA and the ionic solution theory of FRIEDMAN, the free energy of a system of nuclei and electrons is represented by a convergent cluster expansion. Then‐th term of this expansion is given by the screened SLATER sum of thenbody problem. The SLATER sum of two particles is calculated quantummechanically for bound states (E≳ −kT) and classically for free states (E≲ −kT). The second virial coefficient and the SAHA equation for a hydrogen plasma are derived. Long range, short range and high orbit divergencies ar

ISSN:0003-3804    

DOI:10.1002/andp.19674740113

出版商:WILEY‐VCH Verlag    

年代:1967

数据来源: WILEY

ISSN:0003-3804    

DOI:10.1002/andp.19674740101

出版商:WILEY‐VCH Verlag    

年代:1967

数据来源: WILEY