Dynamical Structure Factors of an Alkali Metal: Liquid Rubidium

Grima Dhingra¹

1. Dept. of Physics, Maharshi Dayanand University, Rohtak, Haryana, India.

Section:Research Paper, Product Type: Journal-Paper
Vol.13 , Issue.1 , pp.1-6, Feb-2025

Online published on Feb 28, 2025

Copyright © Grima Dhingra . This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
 

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Abstract :
Theoretical calculations for the coherent dynamical structure factors of an alkali metal, liquid rubidium (85Rb) at a temperature of 338 K, fairly above the melting temperature of liquid metal and corresponds to a mass density of 1.45 g/cmÂł. Are reported. Melting temperature of rubidium is 312.45K, and at the considered temperature of 338 K, the liquid system is 0.945 times rarer as compared to that at room temperature. Theoretical results are provided for a wave-vector range of 0.2 Ă…?Âą to 5.0 Ă…?Âą. The wave-vector range corresponds up to the primary and secondary maxima positions in the structure factor of liquid at the considered physical conditions of temperature and density. The modified microscopic theory of collective dynamics in simple liquids is applied for the present computations. The theory turns out to be a self-consistent approach and produces the equilibrium dynamics of a liquid with the acquaintance of the inter-particle interaction. Along with the dynamical structure factor, other dynamical properties; diffusion coefficient the dispersion relation and sound velocity liquid rubidium under these conditions, have also been reported.

Key-Words / Index Term :
Dynamical structure factor, Alkali metal, Inter-particle interaction potential, Diffusion coefficient; Modified microscopic theory

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