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Incorporating a newly improved isospin- and momentum-dependent interaction in the isospin-dependent Boltzmann-Uehling-Uhlenbeck transport model IBUU11, we have investigated relative effects of the density dependence of nuclear symmetry…

核理论 · 物理学 2015-04-16 Hai-Yun Kong , Yin Xia , Jun Xu , Lie-Wen Chen , Bao-An Li , Yu-Gang Ma

Background: Precise understanding of nuclear fission is crucial for experimental and theoretical nuclear physics, astrophysics, and industrial applications; however, the complete physical mechanics is unresolved due to the complexities.…

核理论 · 物理学 2023-11-27 Shyoya Tanaka , Nobuya Nishimura , Futoshi Minato , Yoshihiro Aritomo

Recent experiments on lead (\textrm{$Pb_{82}^{208}$}) nuclei have observed the celebrated phenomenon of neutron skin-thickness of low energy nuclear physics. The skin-thickness provides a measure of extension of spatial distribution of…

核理论 · 物理学 2017-04-05 Somnath De

The concept of fission barrier - a parameter which enters in quantitative estimates of various observables related to nuclear fission - is presented from the point of view of theory based on the picture of nuclear deformation and energy…

核理论 · 物理学 2022-04-27 Michał Kowal , Janusz Skalski

Development of nuclear energy applications requires data for neutron-induced reactions for actinides in a wide neutron energy range. Here we describe measurements of pre-neutron emission fission fragment mass yields of 232Th and 238U at…

The fragment yield ratios were investigated in the fission of 238,233U targets induced by 14 MeV neutrons. The isoscaling behavior was typically observed for the isotopic chains of fragments ranging from the proton-rich to the most…

核实验 · 物理学 2009-11-10 M. Veselsky , G. A. Souliotis , M. Jandel

We explore how nuclear modifications to the nucleon parton distributions affect production of high-$p_T$ hadrons in heavy ion collisions. We perform a leading order calculation of the high-$p_T$ charged pion, kaon and proton spectra using…

核理论 · 物理学 2010-07-02 S. R. Klein , R. Vogt

Studies of nuclear fission over recent decades have led to a well-defined mapping of neutron and proton shell effects across the nuclear chart, particularly within the valley of stability. These shell effects play a crucial role in driving…

核实验 · 物理学 2025-08-26 J. L. Rodríguez-Sánchez , J. Taïeb

Revealing the neutron density distribution in the nucleus is one of the crucial tasks of nuclear physics. Within the framework of the ultrarelativistic quantum molecular dynamic model followed by a correlation afterburner program, we…

The large body of experimental data on the fission fragments anisotropies are analyzed in several heavy-ion induced fission reaction systems. The entrance channel mass asymmetry parameters of these systems put on the both sides of the…

核理论 · 物理学 2013-09-12 S. Soheyli , M. K. Khalili

We study the scaled variances of multiplicity fluctuations in nucleus-nucleus collisions at SPS and RHIC energies within the HSD transport model. The HSD results are compared with proton-proton data and with predictions of the…

核理论 · 物理学 2008-11-26 V. P. Konchakovski , M. I. Gorenstein , E. L. Bratkovskaya

The dynamics present in the fusion of neutron-rich nuclei is explored through the comparison of experimental cross-sections at above-barrier energies with measurements of the interaction cross-section at relativistic energies. The increase…

核实验 · 物理学 2020-05-08 R. T. deSouza , Varinderjit Singh , S. Hudan , Z. Lin , C. J. Horowitz

The prompt fission neutron spectra for neutron-induced fission of 233U for low energy neutrons (below 6 MeV) are calculated using the nuclear evaporation theory with a semi-empirical method, in which the partition of the total excitation…

核理论 · 物理学 2015-06-16 Yong-Jing Chen , Jia Min , Ting-Jin Liu , Neng-Chuan Shu

A comparative study of fission of actinides specially $^{238}$U, by proton and bremsstrahlung photon is performed. Relative mass distribution of $^{238}$U fission fragments have been explored theoretically for both proton and photon induced…

核理论 · 物理学 2016-11-15 F. A. Khan , Debasis Bhowmick , D. N. Basu , M. Farooq , Alok Chakrabarti

Incident neutron energy dependence of delayed neutron yields of uranium and plutonium isotopes is investigated. A summation calculation of decay and fission yield data is employed, and the energy dependence of the latter part is considered…

核理论 · 物理学 2018-03-23 Futoshi Minato

In this work, we study the effect of including a resonant state of four neutrons in the low-density warm nuclear equation of state, using a relativistic mean-field formalism, where in-medium effects are considered. For that purpose, the…

核理论 · 物理学 2024-09-30 H. Pais , G. Röpke , J. B. Natowitz

The double-energy double-velocity ($2E$-$2v$) method allows assessing fission-fragment mass yields prior to and after prompt neutron emission with high resolution. It is, therefore, considered as a complementary technique to assess average…

仪器与探测器 · 物理学 2017-09-25 Kaj Jansson , Ali Al-Adili , Erik Andersson Sundén , Stephan Pomp , Alf Göök , Stephan Oberstedt

Experimental studies of fission induced in relativistic nuclear collisions show a systematic enhancement of the excitation energy of the primary fragments by a factor of ~ 2, before their decay by fission and other secondary fragments.…

核理论 · 物理学 2020-04-08 C. A. Bertulani , Y. Kucuk , R. Lozeva

Event-by-event fluctuations of the baryon number, which is mostly carried by protons and neutrons, in relativistic heavy-ion collisions provide a sensitive probe for locating the conjectured critical point in the quantum chromodynamics…

核理论 · 物理学 2025-12-24 Yi-Heng Feng , Che Ming Ko , Xiaofeng Luo , Yu-Gang Ma , Kai-Jia Sun , Song Zhang

Spallation-induced fission reactions, in combination with state-of-the-art dynamical calculations, provide a robust framework for studying the nuclear dissipation mechanism in nuclear matter over a wide range of deformations. Experimental…