Preliminary Studies of Thermal Wavelength Approximation in 208Pb and 91Zr hot Nuclei
R. Kurniadi
Faculty of Mathematics and Natural Sciences,
Institut Teknologi Bandung, Indonesia
Abstract. Level density parameters of 208Pb and 91Zr in equilibrium states have been calculated with a new fugacity approximation namely a thermal wavelength approximation. In this approximation, the fugacity is directly proportional to the nucleon density. In contrast with the constant fugacity, the thermal wavelength approximation gives a simpler way to calculate the nuclei constant radius and the density profile. The calculated 208Pb nuclear density is about 0.17 (fm-3) in which the discrepancy is 0.1% higher than the experimental one. The level density parameters are 14% higher than the experimental results due to neglecting of the shell correction.
Keywords: Thermal wave length; fugacity; level density parameters; hot nuclei.
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