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Chaoticity of Low-Lying States of Even-Even Nuclei |
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PP: 1-4 |
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doi:10.18576/jrna/090101
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Author(s) |
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A. Al-Sayed,
Mahgoub A. Salih,
Abdelkareem Almeshal,
Mubarak M. Ahmed,
Sami Dhouibi,
M. Musa Saad H.-E.,
Mohamed Yahia Shirgawi,
Abdel-baset H. Mekky,
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Abstract |
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| The spacing distributions of 453 even-even nuclei are examined in this work. The range of nuclei considered spans from A = 22 to 250, with a minimum requirement of five unambiguous levels for each nucleuss spin-parity (Jπ). The dataset is divided based on the spin-parity states, which range from 0 to 6 states. To assess the chaoticity parameter for each class, the Bayesian inference method is employed. The utilized model successfully interpolates from a Poisson (regular) to a Wigner (chaotic) distribution by varying the chaoticity parameter from 0 to 1 accordingly. Notably, regularity in the form of γ- and/or octupole-vibrations is observed for states 1+, 3+, and 1–. Conversely, other states exhibit an intermediate behavior that lies between the Wigner and Poisson distributions. |
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