Title: Stability and structure of the Rb+Arn (n = 1−20) small clusters

Authors: J. Dhiflaoui, H. Berriche

Addresses: Laboratoire de Physique et chimie des Interfaces, Departement de Physique, Faculte des Sciences de Monastir, Avenue de l'Environement, 5019 Monastir, Tunisie. ' Laboratoire de Physique et chimie des Interfaces, Departement de Physique, Faculte des Sciences de Monastir, Avenue de l'Environement, 5019 Monastir, Tunisie; Physics Department, College of Sciences, King Khalid University, P.O. Box 9004, Abha, Saudi Arabia

Abstract: We have studied the structure and stability of Rb+Arn small clusters (n = 1−20). To describe the potential energy surface of this systems, we have used the analytical form of Tang and Toennies and Lennard Jones (LJ) for the Rb+Ar and Ar2 interactions, respectively. The potential energy surface is explored by the Monte Carlo basin hopping optimisation method in order to determine the minimal structures and their isomers. The relative high stability for Rb+Arn with n = 6, 10, 12, 18 and 20 is observed.

Keywords: small clusters; basin hopping; argon atoms; alkali atoms; stability; magic numbers; nanotechnology; optimisation.

DOI: 10.1504/IJNP.2009.028774

International Journal of Nanoparticles, 2009 Vol.2 No.1/2/3/4/5/6, pp.394-401

Published online: 30 Sep 2009 *

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