中文
相关论文

相关论文: Non-Resonant Alpha-Induced Neutron-Emission: A Mul…

200 篇论文

Rigorous statistical methods for estimating thermonuclear reaction rates and nucleosynthesis are becoming increasingly established in nuclear astrophysics. The main challenge being faced is that experimental reaction rates are highly…

核实验 · 物理学 2015-06-22 Christian Iliadis , Richard Longland , Alain Coc , F. X. Timmes , Art E. Champagne

We compare our Monte Carlo reaction rates (see Paper II of this series) to previous results that were obtained by using the classical method of computing thermonuclear reaction rates. For each reaction, the comparison is presented using two…

太阳与恒星天体物理 · 物理学 2015-05-18 Christian Iliadis , Richard Longland , Art Champagne , Alain Coc

A method based on Monte Carlo techniques is presented for evaluating thermonuclear reaction rates. We begin by reviewing commonly applied procedures and point out that reaction rates that have been reported up to now in the literature have…

太阳与恒星天体物理 · 物理学 2015-05-18 Richard Longland , Christian Iliadis , Art Champagne , Joe Newton , Claudio Ugalde , Alain Coc , Ryan Fitzgerald

The propagation of uncertainties in reaction cross sections and rates of neutron-, proton-, and $\alpha$-induced reactions into the final isotopic abundances obtained in nucleosynthesis models is an important issue in studies of…

高能天体物理现象 · 物理学 2020-12-24 T. Rauscher

Context. Monte Carlo methods have enabled nuclear reaction rates from uncertain inputs to be presented in a statistically meaningful manner. However, these uncertainties are currently computed assuming no correlations between the physical…

天体物理仪器与方法 · 物理学 2017-08-02 Richard Longland

Sensitivities of nuclear reaction rates to a variation of nuclear properties are studied. Target nuclei range from proton- to neutron-dripline for 10<=Z<=83. Reactions considered are nucleon- and alpha-induced reactions mediated by the…

太阳与恒星天体物理 · 物理学 2015-03-13 T. Rauscher

Numerical values of charged-particle thermonuclear reaction rates for nuclei in the A=14 to 40 region are tabulated. The results are obtained using a method, based on Monte Carlo techniques, that has been described in the preceding paper of…

太阳与恒星天体物理 · 物理学 2015-05-18 Christian Iliadis , Richard Longland , Art Champagne , Alain Coc , Ryan Fitzgerald

The nuclear physics input used to compute the Monte Carlo reaction rates and probability density functions that are tabulated in the second paper of this series (Paper II) is presented. Specifically, we publish the input files to the Monte…

太阳与恒星天体物理 · 物理学 2015-05-18 Christian Iliadis , Richard Longland , Art Champagne , Alain Coc

Context: Recent reaction rate evaluations include reaction rate uncertainties that have been determined in a statistically meaningful manner. Furthermore, reaction rate probability density distributions have been determined and published in…

天体物理仪器与方法 · 物理学 2015-06-11 Richard Longland

Understanding the radiogenic neutron production rate through the (${\alpha}$, n) reaction is crucial in many areas of physics, including dark matter searches, neutrino studies, and nuclear astrophysics. In addition to its relevance for…

Nuclear reaction rates determine the abundances of isotopes in stellar burning processes. A multitude of reactions determine the reaction flow pattern which is described in terms of reaction network simulations. The reaction rates are…

天体物理仪器与方法 · 物理学 2010-11-03 M. Wiescher , T. Rauscher

This work describes the formalism for estimating thermonuclear reaction rates for astrophysical applications, emphasizing modern statistical approaches such as Monte-Carlo sampling and Bayesian models. We discuss related topics including…

太阳与恒星天体物理 · 物理学 2026-03-11 Christian Iliadis , Richard Longland , Kiana Setoodehnia , Caleb Marshall , Peter Mohr , Athanasios Psaltis

Astrophysical reaction rates for reactions with proton-rich isotopes of Ne to Bi from stability to the proton dripline were calculated with an updated version of the SMARAGD statistical model (Hauser-Feshbach) code. Here, the focus was on…

核理论 · 物理学 2026-02-25 Thomas Rauscher

Type I X-ray bursts are thermonuclear flashes on the surface of accreting neutron stars, involving hundreds of nuclei and thousands of reactions with larger uncertainties in reaction rate. To investigate the impact of nuclear reaction rate…

高能天体物理现象 · 物理学 2026-03-12 Qing Wang , Ertao Li , Zhihong Li , Youbao Wang , Bing Guo , Yunju Li , Jun Su , Shipeng Hu , Yinwen Guan , Dong Xiang , Yu Liu , Lei Yang , Weiping Liu

By means of a Monte Carlo cascade method, to account for the rescattering of the outgoing nucleon, we study the charged and neutral current inclusive one nucleon knockout reactions off nuclei induced by neutrinos. The nucleon emission…

高能物理 - 唯象学 · 物理学 2011-03-17 J. Nieves , M. Valverde , M. J. Vicente Vacas

This review focuses on nuclear reactions in astrophysics and, more specifically, on reactions with light ions (nucleons and alpha particles) proceeding via the strong interaction. It is intended to present the basic definitions essential…

核理论 · 物理学 2015-03-17 T. Rauscher

The $^{18}$Ne($\alpha$,$p$)$^{21}$Na reaction impacts the break-out from the hot CNO-cycles to the $rp$-process in type I X-ray bursts. We present a revised thermonuclear reaction rate, which is based on the latest experimental data. The…

核理论 · 物理学 2015-05-05 P. Mohr , R. Longland , C. Iliadis

Neutron-induced reaction rates, including fission, are calculated in the temperature range 1.d8 <T (K) < 1.d10 within the framework of the statistical model for targets with atomic number 83 < Z < 119 (from Po to Uuo) from the neutron to…

太阳与恒星天体物理 · 物理学 2015-05-14 I. V. Panov , I. Yu. Korneev , T. Rauscher , G. Martínez-Pinedo , A. Kelić-Heil , N. T. Zinner , F. -K. Thielemann

In view of the application to supernova simulations, we calculate neutrino reaction rates with nucleons via the neutral and charged currents in the supernova core in the relativistic random phase approximation (RPA) and study their effects…

天体物理学 · 物理学 2009-10-31 Shoichi Yamada , Hiroshi Toki

Nuclear reactions govern major aspects of the chemical evolution od galaxies and stars. Analytic study of the reaction rates and reaction probability integrals is attempted here. Exact expressions for the reaction rates and reaction…

天体物理学 · 物理学 2011-04-15 H. J. Haubold , A. M. Mathai
‹ 上一页 1 2 3 10 下一页 ›