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The neutron emission rates in thermal excited nuclei are conventionally described by statistical models with a phenomenological level density parameter that depends on excitation energies, deformations and mass regions. In the microscopic…

核理论 · 物理学 2015-06-22 Yi Zhu , Junchen Pei

The study of blow-up solution of time-fractional heat equations is of significant and wide-ranging interest for its multitude of applications. These types of equations are used to model several real problems in science and engineering. This…

偏微分方程分析 · 数学 2025-09-24 Hind Ghazi Hameed , Burhan Selcuk , Maan A. Rasheed

In solar interior, it is the equilibrium velocity distribution of few high-energy protons and nuclei that participates in determining nuclear fusion reaction rates. So, it is inappropriate to use the Maxwellian velocity distribution to…

天体物理学 · 物理学 2007-05-23 Jian-Miin Liu

We systematically study total reaction cross sections of carbon isotopes with N=6-16 on a proton target for wide range of incident energies, putting an emphasis on the difference from the case of a carbon target. The analysis includes the…

核理论 · 物理学 2014-11-18 B. Abu-Ibrahim , W. Horiuchi , A. Kohama , Y. Suzuki

The relativistic Faddeev equation for three-nucleon scattering is formulated in momentum space and directly solved in terms of momentum vectors without employing a partial wave decomposition. Relativistic invariance is achieved by…

核理论 · 物理学 2008-11-26 T. Lin , Ch. Elster , W. N. Polyzou , W. Gloeckle

We present a Monte Carlo method for direct incorporation of nuclear inputs in primordial nucleosynthesis calculations. This method is intended to remedy shortcomings of current error estimation, by eliminating intermediate data evaluations…

天体物理学 · 物理学 2009-10-31 Kenneth M. Nollett , Scott Burles

The microscopic effective reaction theory is applied to deuteron-induced reactions. A reaction model-space characterized by a $p+n+{\rm A}$ three-body model is adopted, where A is the target nucleus, and the nucleon-target potential is…

核理论 · 物理学 2016-09-29 Yuen Sim Neoh , Kazuki Yoshida , Kosho Minomo , Kazuyuki Ogata

In this study, two novel improvements for the theoretical calculation of the neutron distributions are presented. First, the available experimental proton distributions are used as a constraint rather than inferred from the calculation.…

核理论 · 物理学 2020-08-26 A. R. Abdulghany

Accurate estimate of neutrino energy loss rates are needed for the study of the late stages of the stellar evolution, in particular for cooling of neutron stars and white dwarfs. The energy spectra of neutrinos and antineutrinos arriving at…

核理论 · 物理学 2014-08-20 Jameel-Un Nabi

The aim of this paper is to refine some results concerning the blow-up of solutions of the exponential reaction-diffusion equation. We consider solutions that blow-up in finite time, but continue to exist as weak solutions beyond the…

偏微分方程分析 · 数学 2011-02-25 Aappo Pulkkinen

The information about sizes and nuclear density distributions in unstable (radioactive) nuclei is usually extracted from the data on interaction of radioactive nuclear beams with a nuclear target. We show that in the case of nucleus-nucleus…

核理论 · 物理学 2011-01-26 C. Merino , I. S. Novikov , Yu. M. Shabelski

We study the generalized Hartree equation, which is a nonlinear Schr\"odinger-type equation with a nonlocal potential $iu_t + \Delta u + (|x|^{-b} \ast |u|^p)|u|^{p-2}u=0, x \in \mathbb{R}^N$.We establish the local well-posedness at the…

偏微分方程分析 · 数学 2019-10-03 Anudeep K. Arora , Svetlana Roudenko

We generalize the problem of strongly interacting neutron matter by adding a periodic external modulation. This allows us to study from first principles a neutron system that is extended and inhomogeneous, with connections to the physics of…

核理论 · 物理学 2016-04-13 Mateusz Buraczynski , Alexandros Gezerlis

A method for integrating the chemical equations associated with nuclear combustion at high temperature is presented and extensively checked. Following the idea of E. M\"uller, the feedback between nuclear rates and temperature was taken…

天体物理学 · 物理学 2007-05-23 Ruben M. Cabezon Gomez , Domingo Garcia-Senz , Eduardo Bravo

We report a fuel-dependent reactor electron antineutrino ($\overline{\nu}_e$) yield using six 2.8 GW$_{\text{th}}$ reactors in the Hanbit nuclear power plant complex, Yonggwang, Korea. The analysis uses $850\,666$ $\overline{\nu}_e$…

高能物理 - 实验 · 物理学 2019-06-14 The RENO Collaboration

The neutrino-nucleus reactions are studied at energies from 0 to 3 GeV, using the CRISP program. To simulate these reactions, CRISP uses the Monte Carlo method through an intranuclear cascade model. Quase-elastic and baryonic resonance…

核理论 · 物理学 2022-04-06 R. Perez , A. Deppman , Evandro Andrade-II , A. R. Samana , F. G. Velasco , F. Guzmán

A simple quantum defect model gives analytic expressions for the complex scattering length and threshold collision rates of ultracold molecules. If the probability of reaction in the short-range part of the collision is high, the model…

原子物理 · 物理学 2015-05-14 Zbigniew Idziaszek , Paul S. Julienne

Direct reaction techniques are powerful tools to study the single-particle nature of nuclei. Performing direct reactions on short-lived nuclei requires radioactive ion beams produced either via fragmentation or the Isotope Separation OnLine…

Nuclear transparency in (e,e'p) reactions is evaluated in a fully relativistic distorted wave impulse approximation model. The relativistic mean field theory is used for the bound state and the Pauli reduction for the scattering state,…

核理论 · 物理学 2014-11-18 Andrea Meucci

Hydrocarbon pyrolysis is a complex process involving large numbers of chemical species and types of chemical reactions. Its quantitative description is important for planetary sciences, in particular, for understanding the processes…

原子与分子团簇 · 物理学 2022-09-09 Vincent Dufour-Décieux , Christopher Moakler , Maria Cameron , Evan J. Reed