scholarly journals Universal Fermi distribution of semiclassical nonequilibrium Fermi states

2011 ◽  
Vol 84 (8) ◽  
Author(s):  
Eldad Bettelheim ◽  
Paul B. Wiegmann
Keyword(s):  
Fermi Distribution

An expansion of the moments of powers of a Fermi distribution

1981 ◽  
Vol 22 (11) ◽  
pp. 2484-2485 ◽  
Author(s):  
H. Krivine ◽  
J. Treiner
Keyword(s):  
Fermi Distribution

NEUTRON DENSITY DISTRIBUTIONS IN SPHERICALLY SYMMETRIC LEAD ISOTOPES

2010 ◽  
Vol 25 (24) ◽  
pp. 2071-2076
Author(s):  
S. HADDAD
Keyword(s):  
Density Distribution ◽  
Lead Isotopes ◽  
Neutron Density ◽  
Spherically Symmetric ◽  
Fermi Model ◽  
Thomas Fermi ◽  
Density Distributions ◽  
Fermi Distribution ◽  
Neutron Density Distribution ◽  
Two Parameter

Based on a relativistic Thomas–Fermi model, it is shown that a two-parameter Fermi distribution can be used for describing the neutron density distribution in the 208 Pb nucleus.

Longitudinal oscifiations of a plasma having a Fermi distribution of electrons

1969 ◽  
Vol 3 (1) ◽  
pp. 47-54
Author(s):  
M. Gibbons
Keyword(s):  
Electron Density ◽  
Angular Frequency ◽  
Restoring Force ◽  
Fermi Distribution ◽  
Lines Of Force

In this paper, the electrostatic oscillations of a plasma having a Fermi distribution of energies are discussed. The electrons, assumed to be tightly bound to the magnetic lines of force, are acted upon by a linear restoring force which causes the electrons to oscillate with a fixed angular frequency ω0. The dependence of the frequencies of oscillation of the plasma on electron density is calculated in the two limiting cases ωp0/ω0 ≪ and ωp0/ω0 ≫ 1.

Moments of the three-parameter Fermi distribution

2017 ◽  
Vol 32 (36) ◽  
pp. 1750195 ◽  
Author(s):  
L. Zhang ◽  
Y. Gao ◽  
H. Zheng ◽  
M. R. Huang ◽  
X. Liu
Keyword(s):  
General Expression ◽  
Numerical Results ◽  
Neutron Skin ◽  
Fermi Distribution ◽  
Density Radius ◽  
The Moment ◽  
Diffuseness Parameter

The moments [Formula: see text] of the spherical three-parameter Fermi distribution (3pF) are presented for [Formula: see text] to 8 as a function of the parameter [Formula: see text], the half-density radius [Formula: see text] and the diffuseness parameter [Formula: see text] through the introduced parameter [Formula: see text], which can be applied to study the neutron skin in neutron rich nuclei. The general expression of the moment can be written as the combination of integrals [Formula: see text] with [Formula: see text]. The errors of the analytic moments [Formula: see text] are estimated with the typical values of the parameters in 3pF compared with the numerical results.

scholarly journals The variation of the Ηωwith the particle number and the appearance of "kinks" for atomic clusters

2020 ◽  
Vol 9 ◽  
pp. 306
Author(s):  
B. A. Kotsos ◽  
M. E. Grypeos
Keyword(s):  
Energy Level ◽  
Harmonic Oscillator ◽  
Particle Number ◽  
Atomic Clusters ◽  
Level Spacing ◽  
Fermi Distribution ◽  
Sodium Clusters ◽  
Electronic Densities ◽  
Closed Shells

The dependence of the harmonic oscillator (HO) energy level spacing Ηω on the particle number Ν is studied analytically for atomic clusters on the basis of their electronic densities, parametrizing Ekardt's results (for sodium clusters) by means of a Fermi distribution. An interesting feature of such an approach is that it leads, under the assumptions made, to "kinks", that is to "marked discontinuities in the slope" of Ηω at the closed shells. These discontinuities diminish as Ν increases.

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