Mass predictions of exotic nuclei within a macro-microscopic model - IN2P3 - Institut national de physique nucléaire et de physique des particules
Communication Dans Un Congrès Année : 2011

Mass predictions of exotic nuclei within a macro-microscopic model

Guy Royer
Maxime Guilbaud

Résumé

Different Liquid Drop Model mass formulae have been studied. They include a Coulomb diffuseness correction Z2/A term and pairing and shell energies of the Thomas-Fermi model. The influence of the selected charge radius, the curvature energy and different forms of the Wigner term has been investigated. Their coefficients have been determined by a least square fitting procedure to 2027 experimental atomic masses. The different fits lead to a surface energy coefficient of 17-18 MeV. A large equivalent rms radius (r0 = 1.22 − 1.24 fm) or a shorter central radius may be used. A rms deviation of 0.54 MeV can be reached between the experimental and theoretical masses. The remaining differences come from the determination of the shell and pairing energies. Mass predictions are given for exotic nuclei.
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Dates et versions

in2p3-00567946 , version 1 (22-02-2011)

Identifiants

Citer

Guy Royer, A. Onillon, Maxime Guilbaud, A. Auzizeau. Mass predictions of exotic nuclei within a macro-microscopic model. 10th International Spring Seminar on Nuclear Physics : New quests in nuclear structure, May 2010, Vietri, Italy. pp.012010, ⟨10.1088/1742-6596/267/1/012010⟩. ⟨in2p3-00567946⟩
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