1991
DOI: 10.1088/0953-8984/3/7/007
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Universality in the structural change of expanded liquid alkali metals along the liquid-vapour coexistence curve

Abstract: The structures of expanded liquid alkali metals, Na. K, Rb and Cs, along the Liquid-vapour coexistence curve are investigated theoretically by employing the integral equation method in the modified hypernerted-chain (hIHNC) approximation and the molecular dynamics (m) simulation. Excellent agreement is obtained between the MHNC and the MD results, which also agree well with the experimental results. It is shown from lhese systematic investigations that the characteristic features of the density dependence of … Show more

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Cited by 47 publications
(20 citation statements)
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“…The density values at different temperatures are taken from Refs. [21] and [22]. Temperature variations are comparatively large in cases of Na, Mg, and Al [38].…”
Section: Resultsmentioning
confidence: 99%
See 1 more Smart Citation
“…The density values at different temperatures are taken from Refs. [21] and [22]. Temperature variations are comparatively large in cases of Na, Mg, and Al [38].…”
Section: Resultsmentioning
confidence: 99%
“…The pair potential derived from pseudopotential theory is a "constant volume" interionic potential suitable for homogeneous systems and describes ionic rearrangements at constant volume. However, Matsuda et al [22] have studied the dependence of the structure of expanded liquid alkali metals over a wide range of densities based on the effective pair potentials derived from electron-ion pseudopotential within the linear screening approximation and found excellent agreement with experimental results. Pair potential in strongly inhomogeneous system, may be described in terms of a local density [23] derived from an average over some finite distance comparable to the electronic screening length.…”
Section: Introductionmentioning
confidence: 95%
“…This obser vation is consistent with the view that intra molecular dynamic effects are present in liquid expanded rubidium under these conditions. In view of the possibility that for alkali metals the dynamic units can change signifi cantly throughout the liquid range both with density and temperature, it is clear that the practice of inverting measured structure factor data.to get effective pair potentials [43,44] or to model the structure factor of expanded metals [45][46][47][48][49][50] by employing pair potentials mediated by the itinerant metal electrons hinges critically on insight into the density range in which alkali metals can be viewed as monoatomic metallic fluids. 6.…”
Section: Static and Dynamic Structurementioning
confidence: 99%
“…Alkali metals are generally considered to be the simplest metals since they possess a single electron in their external shell. Nevertheless, they are still the objects of great interest [4,5] for different reasons. Their chemical reactivity makes them valuable for researches.…”
Section: Introductionmentioning
confidence: 99%