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Bremsstrahlung fluxes for irradiating tantalum samples were formed by irradiating a tungsten converter with an electron beam with energy up to 130 MeV. The relative yields and flux-averaged cross-sections of multinucleon photonuclear…

Ternary fission yields in the reaction 241Pu(nth,f) are calculated using a new model which assumes a nucleation-time moderated chemical equilibrium in the low density matter which constitutes the neck region of the scissioning system. The…

核实验 · 物理学 2015-06-19 S. Wuenschel , H. Zheng , K. Hagel , B. Meyer , M. Barbui , E. J. Kim , G. Roepke , J. B. Natowitz

Within the framework of the modified potential cluster model with a classification of orbital states according to Young diagrams, the possibility of data description of the radiative neutron capture on 11B to the second excited state of 12B…

核理论 · 物理学 2021-03-12 S. B. Dubovichenko , N. A. Burkova , A. V. Dzhazairov-Kakhramanov

This tutorial is devoted to the understanding of the different components that are present in the neutron light output pulse height distribution of liquid scintillators in fusion relevant energy ranges. The basic mechanisms for the…

仪器与探测器 · 物理学 2018-10-16 M. Cecconello

We calculate the equation of state of neutron matter at zero temperature by means of the auxiliary field diffusion Monte Carlo method (AFDMC) combined with a fixed-phase approximation. The calculation of the energy is carried out by…

核理论 · 物理学 2009-06-30 S. Gandolfi , A. Yu. Illarionov , K. E. Schmidt , F. Pederiva , S. Fantoni

Aspects of predictions of activation-energy asymptotics concerning the dependence of the burning velocity on the equivalence ratio are examined here through both asymptotic analyses and numerical computation. In typical hydrocarbon-air…

流体动力学 · 物理学 2024-06-28 Prabakaran Rajamanickam

We propose a new Monte Carlo method called the pinhole trace algorithm for {\it ab initio} calculations of the thermodynamics of nuclear systems. For typical simulations of interest, the computational speedup relative to conventional…

Breakup reactions of loosely-bound nuclei are often used to extract structure and/or astrophysical information. Here we compare three non-perturbative reaction theories often used when analyzing breakup experiments, namely the continuum…

核理论 · 物理学 2015-06-04 P. Capel , H. Esbensen , F. M. Nunes

Proton-neutron quasi-particle random phase approximation (pn-QRPA) theory has recently being used for calculation of stellar weak interaction rates of $fp$-shell nuclide with success. Neutrino losses from proto-neutron stars play a pivotal…

核理论 · 物理学 2011-08-09 Jameel-Un Nabi , Muhammad Sajjad

In this paper we consider nodal radial solutions $u_\epsilon$ to the problem \[ \begin{cases} -\Delta u=\lambda ue^{u^2+|u|^{1+\epsilon}}&\text{ in }B,\\ u=0&\text{ on }\partial B. \end{cases} \] and we study their asymptotic behaviour as…

偏微分方程分析 · 数学 2017-07-04 Massimo Grossi , Daisuke Naimen

We build up a model to reproduce the experimentally measured $R_{AA}$ of $J/\psi$ near midrapidty in Au+Au collision at $\sqrt{s_{NN}}=200$ GeV. The model takes into account the $J/\psi$ suppression from the quark-gluon plasma and hadron…

核理论 · 物理学 2010-05-28 Taesoo Song , Woosung Park , Su Houng Lee

Purpose : The aim of this paper is to calculate the $^{15}$N($n, \gamma$)$^{16}$N radiative capture cross section and its subsequent reaction rate by an indirect method and in that process investigate the effects of spectroscopic factors of…

核理论 · 物理学 2015-10-13 Neelam , Shubhchintak , R. Chatterjee

The relativistic proton-neutron quasiparticle random phase approximation (PN-RQRPA) is applied in the calculation of total muon capture rates on a large set of nuclei from $^{12}$C to $^{244}$Pu, for which experimental values are available.…

核理论 · 物理学 2009-06-30 T. Marketin , N. Paar , T. Niksic , D. Vretenar

Type I X-ray bursts (XRBs) are thermonuclear runaways on the surface of accreting neutron stars, powered by rapid proton-capture and alpha-capture processes on neutron-deficient nuclei. Uncertainties in the corresponding reaction rates…

高能天体物理现象 · 物理学 2025-10-20 I. Sultana , A. Estrade , B. S. Meyer , H. Schatz

We study a class of Hartree type equations and prove a quantitative blow up rate for their blow up solutions. This is an analogue of the result by Merle and Rapha\"el on 3d NLS.

偏微分方程分析 · 数学 2022-04-14 Shumao Wang

Reaction rates are a complicated function of molecular interactions, which can be selected from vast chemical design spaces. Seeking the design that optimizes a rate is a particularly challenging problem since the rate calculation for any…

统计力学 · 物理学 2020-11-18 Alex Albaugh , Todd R. Gingrich

In the present work, an improved numerical solution for determining the ratio,$\mathcal{R}^{\rm Mott}$, of the unscreened Mott differential cross section (MDCS) with respect to Rutherford's formula is proposed for the scattering of…

A geometric model for the direct contribution of the reaction cross section induced by light ions on different targets is presented. The model separates the total reaction cross section into two components, one for total fusion and another…

核理论 · 物理学 2023-06-26 A. Serra , R. Lichtenthäler , O. C. B. Santos , K. C. C. Pires , U. Umbelino

The rate coefficient formulae of unimolecular reactions are generalized to the systems with the power-law distributions based on nonextensive statistics, and the power-law rate coefficients are derived in the high and low pressure limits,…

化学物理 · 物理学 2014-05-06 Cangtao Yin , Ran Guo , Jiulin Du

In this paper, we explore a nonlocal inviscid Burgers equation. Fixing a parameter $h$, we prove existence and uniqueness of the local solution of the equation $\InviscidBurgersNonlocal{u}$ with periodic initial condition. We also explore…

偏微分方程分析 · 数学 2013-09-18 Hang Yang , Sam Goodchild