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arXiv · 2009.09292

Thermal Properties of Deng-Fan-Eckart Potential model using Poisson Summation Approach

C. O. Edet·U. S. Okorie·G. Osobonye·A. N. Ikot·G. J. Rampho·R. Sever
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Abstract

The Deng-Fan-Eckart (DFE) potential is as good as the Morse potential in studying atomic interaction in diatomic molecules. By using the improved Pekeris-type approximation, to deal with the centrifugal term, we obtain the bound-state solutions of the radial Schr\"odinger equation with this adopted molecular model via the Factorization Method. With the energy equation obtained, the thermodynamic properties of some selected diatomic molecules(H2 , CO , and ScN ) were obtained using Poisson summation method.. The unnormalized wave function is also derived. The energy spectrum for a set of diatomic molecules for different values of the vibrational n and rotational l are obtained. To show the accuracy of our results, we discuss some special cases by adjusting some potential parameters and also compute the numerical eigenvalue of the Deng-Fan potential for comparison sake. However, it was found out that our results agree excellently with the results obtained via other methods.

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C. O. Edet, U. S. Okorie, G. Osobonye, A. N. Ikot, G. J. Rampho, R. Sever. 2020-09-19. Thermal Properties of Deng-Fan-Eckart Potential model using Poisson Summation Approach. https://doi.org/10.1007/s10910-020-01107-4

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