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Электронный каталог: Setaro, P. A. - Fission Decay of &sup(132)Ce with an Improved Stationary Approach
Setaro, P. A. - Fission Decay of &sup(132)Ce with an Improved Stationary Approach
Статья
Автор: Setaro, P. A.
Physical Review C: Fission Decay of &sup(132)Ce with an Improved Stationary Approach
б.г.
ISBN отсутствует
Автор: Setaro, P. A.
Physical Review C: Fission Decay of &sup(132)Ce with an Improved Stationary Approach
б.г.
ISBN отсутствует
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Статья
Setaro, P.A.
Fission Decay of &sup(132)Ce with an Improved Stationary Approach / P.A.Setaro, N.Carjan, [a.o.]. – Text : electronic // Physical Review C. – 2026. – Vol. 113, No. 2. – P. 024613. – URL: https://doi.org/10.1103/b2bx-dn5y.
Fission fragment mass and total kinetic energy (TKE) distributions reported in [E. Vardaci et al., Phys. Rev. C 92, 034610 (2015)] for the reaction *3*2S+*1*0*0Mo leading to *1*3*2Ce compound nucleus at the excitation energy 𝐸𝑥=*1*2*2MeV are analyzed by means of an improved scission-point model that describes the shape of the compound nucleus at scission in terms of Cassini ovals. This study is motivated by a former comparison of the experimental fission data with the predictions of a dynamical model of fission, based on three-dimensional Langevin equations, that showed a significant disagreement with the measured TKE distribution. A broader set of nuclear shapes is accessible with Cassini ovals, in contrast to the more limited flexibility of the “Funny Hills” parametrization used in the dynamical code. For this reason, the present results show a clearer improvement in reproducing the experimental mass and TKE distributions compared to the dynamical model. Moreover, the present work highlights the need to consistently account for a nonequilibrium contribution, such as a deep-inelastic process, in both the mass and TKE distributions, for an estimated amount of 23.5% of the total yield. In the present work, the potential energy surface at the moment of neck rupture (corresponding to the scission parameter 𝛼 = 0.985) is computed as a function of the shape parameters 𝛼&sub(1), accounting for the mass asymmetry, and 𝛼4, accounting for the elongation at the scission point. Then a minimization on 𝛼6, which accounts for small oscillations around the nuclear shape, is performed at each point (𝛼&sub(1), 𝛼&sub(4)). Furthermore, model calculations have been extended beyond the measured fragment mass asymmetry range to investigate the path towards the Businaro-Gallone transition.
ОИЯИ = ОИЯИ (JINR)2026
Setaro, P.A.
Fission Decay of &sup(132)Ce with an Improved Stationary Approach / P.A.Setaro, N.Carjan, [a.o.]. – Text : electronic // Physical Review C. – 2026. – Vol. 113, No. 2. – P. 024613. – URL: https://doi.org/10.1103/b2bx-dn5y.
Fission fragment mass and total kinetic energy (TKE) distributions reported in [E. Vardaci et al., Phys. Rev. C 92, 034610 (2015)] for the reaction *3*2S+*1*0*0Mo leading to *1*3*2Ce compound nucleus at the excitation energy 𝐸𝑥=*1*2*2MeV are analyzed by means of an improved scission-point model that describes the shape of the compound nucleus at scission in terms of Cassini ovals. This study is motivated by a former comparison of the experimental fission data with the predictions of a dynamical model of fission, based on three-dimensional Langevin equations, that showed a significant disagreement with the measured TKE distribution. A broader set of nuclear shapes is accessible with Cassini ovals, in contrast to the more limited flexibility of the “Funny Hills” parametrization used in the dynamical code. For this reason, the present results show a clearer improvement in reproducing the experimental mass and TKE distributions compared to the dynamical model. Moreover, the present work highlights the need to consistently account for a nonequilibrium contribution, such as a deep-inelastic process, in both the mass and TKE distributions, for an estimated amount of 23.5% of the total yield. In the present work, the potential energy surface at the moment of neck rupture (corresponding to the scission parameter 𝛼 = 0.985) is computed as a function of the shape parameters 𝛼&sub(1), accounting for the mass asymmetry, and 𝛼4, accounting for the elongation at the scission point. Then a minimization on 𝛼6, which accounts for small oscillations around the nuclear shape, is performed at each point (𝛼&sub(1), 𝛼&sub(4)). Furthermore, model calculations have been extended beyond the measured fragment mass asymmetry range to investigate the path towards the Businaro-Gallone transition.
ОИЯИ = ОИЯИ (JINR)2026
