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The effect of shell closure on the thermodynamic properties of $^{207}$ Pb and $^{89}$ Y

V. Dehghani

Physics Department, Faculty of Sciences, University of Sistan and Baluchestan, Zahedan, Iran

E-mail Address: vdehghani@phys.usb.ac.ir

Corresponding author.

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Gh. Forozani

Department of Physics, Payame Noor University, P. O. Box 19395-3697, Tehran, Iran

Physics Department, Bu-Ali Sina University, Hamedan, Iran

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, and

Kh. Benam

Physics Department, Bu-Ali Sina University, Hamedan, Iran

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https://doi.org/10.1142/S0218301316500981Cited by:3 (Source: Crossref)

Abstract

Nuclear level densities of $^{207}$ Pb and $^{89}$ Y are calculated using the Lipkin–Nogami (LN) method and Bradeen–Cooper–Schrieffer (BCS) model. It is revealed that the calculated nuclear level densities are highly matched with the experimental data of Oslo group. The excitation energy and entropy are calculated for mentioned nuclei. In the case of two studied nuclei the characteristic of being magic for the number of neutrons or protons causes the decrease of the excitation energy and entropy contribution of magic system at low temperatures.

Keywords:

PACS: 21.10.Ma, 21.60.Cs

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