Variation of positron annihilation rates in metals

Osiele, OM

doi:10.4314/jonamp.v12i1.45486

Cited by 1 publication

(2 citation statements)

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“…At similar temperatures, some liquid characteristics differ significantly from those of solids. However, compared to crystalline solid state or gaseous properties, they have typically shown to be far more difficult to compute [113]. Osiele et al [113] have reported the structural properties, such as the structure factor, for simple liquid metals and their alloys based on the aforementioned statement.…”

Section: Ss (Soft Sphere) Methodsmentioning

confidence: 99%

“…Without taking into account the pseudopotential method category, we evaluated five approaches: Percus-Yevick Hard Sphere , Hard Sphere Yukawa (HSY) , Mean Spherical Approximation (MSA) , Generalised Mean Spherical Approximation (GMSA) [71][72][73][74][75][76][77][78][79][80][81] and Soft Sphere (SS) [82][83][84][85][86][87][88][89][90][91][92][93][94][95]. The pseudopotential concept is the basis for the One-Component Plasma (OCP) [96][97][98][99][100][101][102][103][104][105][106][107][108][109][110][111][112][113][114][115], Optimised Random Phase Approximation (ORPA) [116][117][118]…”

Section: Introductionmentioning

confidence: 99%

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Comparative studies of role of different structure factors in various physical properties of some simple liquid metals

Jani,

Vora

2024

Phys. Scr.

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In the current work, the comparison of the structure factors and pair correlation functions produced by using eight different theoretical models based on the Perckus-Yevick Hard Sphere (PYHS), Hard Sphere Yukawa (HSY), Mean Spherical Approximation (MSA), Generalized Mean Spherical Approximation (GMSA), Soft Sphere (SS), One-Component Plasma (OCP), Optimized Random Phase Approximation (ORPA) and Charged Hard Sphere (CHS) models for liquid metals viz. Li, Na, K, Rb, Cs, Mg, Zn, Ca, Al, Ga, In, Pb, Sn, Bi and Sb are carried out. Our own model potential is used with the Taylor (TY) screening function in the present computation. With this, certain physical properties such as electrical transport (electrical resistivity), vibrational property (phonon dispersion), dynamical property (velocity autocorrelation function (VACF)) and static (long wavelength of structure factor) properties has also been calculated. When the several theoretical models of the structure factors of the researched simple liquid metals are compared, it is discovered that the experimental data is consistent and in good agreement with the theoretical models.

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Section: Ss (Soft Sphere) Methodsmentioning

confidence: 99%