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[en] Analytical expressions of < rsup(a)> for an atom, with arbitrary ionization degree are found within the Thomas-Fermi model including the corrections for exchange and inhomogeneity of the electron density. The contribution of strongly bound electrons is obtained for the expectation values of rsup(a) with -5/2< a<-1/2. The Z-1 expansion coefficients of < rsup(a)> as a function of the electron number are given in an explicit form
Journal
Journal de Physique; ISSN 0302-0738; 
; v. 43(9); p. 1339-1351
; v. 43(9); p. 1339-1351
[en] The energy functional of Thomas-Fermi-Dirac-von Weizsäcker model with external potential is studied. The minimizer for the functional is investigated. Furthermore, the value and some properties of the minimizer are estimated from the functional without solving the associate Euler-Lagrange equation
Journal
Journal of Physics. Conference Series (Online); ISSN 1742-6596; ; v. 539(1); [4 p.]
; v. 539(1); [4 p.]
[en] A phenomenological approch is suggested for calculating two temperature equations of state at high pressures. The Thomas-Fermi Dirac model and the SESAME equation of state are used to calculate the electron contribution while the solid gas interpolation method is used for ions. Moreover, an algorithm is proposed to calculate the first and higher moments of the charge distribution within the framework of the Thomas-Fermi Dirac model. (author). 5 refs
Source
Guyenne, T.D.; Hunt, J.J. (European Space Research and Technology Centre, Noordwijk (Netherlands)) (eds.); ESA-SP; no. 285 (v. 1); 414 p; 1989; p. 353-357; ESTEC; Noordwijk (Netherlands); Joint Varenna-Abastumani international school and workshop on plasma astrophysics; Varenna (Italy); 24 Aug - 3 Sep 1988; ISSN 0379-6566;
[en] The equation of the Thomas-Fermi-Dirac statistical model of the atom is solved in a linear in the exchange parameter approximation at large distances from the nucleus. General expressions for atomic radii are obtained from this solution. Atomic radii are calculated for atoms with large nuclear charges. 7 refs
Journal
[en] Collisional damping widths of isoscalar giant monopole, isovector giant dipole and isoscalar giant quadrupole excitations for 120Sn and 208Pb at zero and finite temperatures are calculated within Thomas-Fermi approximation by employing a recently proposed modified Skyrme force and the results are compared with previous works. (author)
Journal
International Journal of Modern Physics E; ISSN 0218-3013; ; v. 11(5); p. 369-378
; v. 11(5); p. 369-378
No abstract available
Journal
[en] It is shown that the Thomas-Fermi Fisher information is negative. A slightly more sophisticated model proposed by Gaspar provides a qualitatively correct expression for the Fisher information: Gaspar's Fisher information is proportional to the two-third power of the atomic number. Accurate numerical calculations show an almost linear dependence on the atomic number
Journal
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