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International Journal of the Physical Sciences

Exact solutions for vibrational states with generalized q-deformed Morse potential within the asymptotic iteration method

M. Chabab

Published Feb 16, 2012• 13 citations
Publisher

Abstract

Exact eigenvalues and eigenfunctions of the Schrodinger equation with generalized q-deformed Morse potential for diatomic molecules have been derived in the framework of the asymptotic iteration method (AIM). The obtained solutions have been applied to calculate the energies of bound vibrational levels of the lithium molecule in the   state. Compared to AIM previous calculations, our results are extremely accurate and are in excellent agreement with those using different approximation techniques.   Key words: q-Deformed Morse potential, asymptotic iteration method.

DOI
10.5897/ijps11.1527

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Exact eigenvalues and eigenfunctions of the Schrodinger equation with generalized q-deformed Morse potential for diatomic molecules have been derived in the framework of the asymptotic iteration method (AIM). The obtained solutions have been applied to calculate the energies of bound vibrational levels of the lithium molecule in the   state. Compared to AIM previous calculations, our results are extremely accurate and are in excellent agreement with those using different approximation techniques.
 

Key words: q-Deformed Morse potential, asymptotic iteration method.
Abstract In this study, we apply the parametric Nikiforov-Uvarov method to obtain the bound state solution of Schrödinger wave equation in the presence of Kratzer plus generalized Morse potential (KPGM). The energy eigen equation and the corresponding normalised wave function were obtained in closed form. The resulting energy eigen equation were use to study partition function and other thermodynamic properties such as vibrational mean energy, vibrational specific heat capacity, vibrational mean free energy and vibrational entropy for the proposed potential as applied to lithium hydride diatomic molecule. The thermodynamic plots obtained were in excellent agreement to work of existing literatures. The wave function and probability density plots for the diatomic molecules were obtained through a well designed and implemented maple programme.PACS Nos: 03.65Ge; 03.65-w; 03.65Ca
In this study, we apply the parametric Nikiforov-Uvarov method to obtain the bound state solution of Schrodinger wave equation in the presence of Kratzer plus generalized Morse potential (KPGM). The energy eigen equation and the corresponding normalised wave function were obtained in closed form. The resulting energy eigen equation were use to study partition function and other thermodynamic properties such as vibrational mean energy, vibrational specific heat capacity, vibrational mean free energy and vibrational entropy for the proposed potential as applied to lithium hydride diatomic molecule. The thermodynamic plots obtained were in excellent agreement to work of existing literatures. The wave function and probability density plots for the diatomic molecules were obtained through a well designed and implemented maple programme.