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Reliable photo-nuclear reaction rates at the stellar conditions are essential to understand the origin of the heavy stable neutron-deficient isotopes between $^{74}$Se and $^{196}$Hg-p-nuclei, however, many reaction rates of relevance still…

The thermonuclear $^{19}$F($p$,$\alpha_0$)$^{16}$O reaction rate in a temperature region of 0.007--10 GK has been derived by re-evaluating the available experimental data, together with the low-energy theoretical $R$-matrix extrapolations.…

Solar and Stellar Astrophysics · Physics 2018-01-17 J. J. He , I. Lombardo , D. Dell'Aquila , Y. Xu , L. Y. Zhang , W. P. Liu

The radioactive $\beta$-decay of nuclei synthesized in the rapid neutron capture process ($r$-process) releases a variety of particles, including electrons, $\gamma$-rays, neutrinos, and neutrons. These particles provide a rich set of…

High Energy Astrophysical Phenomena · Physics 2026-05-26 Axel Gross , Samuel Cupp , Matthew R. Mumpower

Preliminary results of a new set of stellar evolution and nucleosynthesis calculations for massive stars are presented. These results were obtained with an extended reaction network up to Bi. The discussion focuses on the importance of…

Nuclear Theory · Physics 2017-08-23 T. Rauscher , R. D. Hoffman , A. Heger , S. E. Woosley

We present the results of nucleosynthesis calculations based on multidimensional (2D and 3D) hydrodynamical simulations of the thermonuclear burning phase in SNIa. The detailed nucleosynthetic yields of our explosion models are calculated…

Astrophysics · Physics 2009-11-10 C. Travaglio , W. Hillebrandt , M. Reinecke , F. -K. Thielemann

We investigate nuclear pasta phases appearing in hot neutron-star matter based on the compressible liquid-drop model, where the matter consists of a dense liquid phase and a dilute gas phase separated by a sharp interface. The surface…

Nuclear Theory · Physics 2026-03-18 Jian Zhou , Junbo Pang , Hong Shen , Jinniu Hu

The competing $^{22}$Ne($\alpha,\gamma$)$^{26}$Mg and $^{22}$Ne($\alpha,n$)$^{25}$Mg reactions control the production of neutrons for the weak $s$-process in massive and AGB stars. In both systems, the ratio between the corresponding…

We have studied how the third dredge-up and the carbon star formation in low-mass Asymptotic Giant Branch stars depends on certain key nuclear reaction rates. We find from a set of complete stellar evolution calculations of a 2Msun model…

Astrophysics · Physics 2009-11-10 Falk Herwig , Sam M. Austin

Within the framework of the dinuclear system model, the production mechanism of neutron-rich heavy nuclei around N = 162 has been investigated systematically. The isotopic yields in the multinucleon transfer reaction of $^{238}$U +…

Nuclear Theory · Physics 2022-09-07 Cheng Peng , Zhao-Qing Feng

A reaction network is a chemical system involving multiple reactions and chemical species. Stochastic models of such networks treat the system as a continuous time Markov chain on the number of molecules of each species with reactions as…

Probability · Mathematics 2007-05-23 Karen Ball , Thomas G. Kurtz , Lea Popovic , Greg Rempala

Standard Big Bang Nucleosynthesis (BBN) predicts the abundances of the light elements in the early universe. Even if the overall agreement with the experimental data is good, still some discrepancies exist on the relic abundances of…

Nuclear Theory · Physics 2020-12-16 Alex Gnech

Metallic nanoparticles embedded in stimuli-responsive polymers can be regarded as nanoreactors since their catalytic activity can be changed within wide limits: the physicochemical properties of the polymer network can be tuned and switched…

Chemical Physics · Physics 2015-07-22 Stefano Angioletti-Uberti , Yan Lu , Matthias Ballauff , Joachim Dzubiella

The 16O(p,gamma)17F reaction rate is revisited with special emphasis on the stellar temperature range of T=60-100 MK important for hot bottom burning in asymptotic giant branch (AGB) stars. We evaluate existing cross section data that were…

Astrophysics · Physics 2009-06-23 C. Iliadis , C. Angulo , P. Descouvemont , M. Lugaro , P. Mohr

The photonuclear reactions which is induced by high-energetic photon are one of the important type of reactions in the nuclear structure studies. In this reaction, a target material is bombarded by photons with the energies in the range of…

Nuclear Theory · Physics 2020-03-18 Serkan Akkoyun , Hüseyin Kaya , Abdulkadir Şeker , Saliha Yeşilyurt

Multimessenger observations of the neutron star merger event GW170817 have re-energized the debate over the astrophysical origins of the most massive elements via the r-process nucleosynthesis. A key aspect of such studies is comparing…

Nuclear Theory · Physics 2020-10-06 S. Nikas , G. Perdikakis , M. Beard , R. Surman , M. R. Mumpower , P. Tsintari

The spallative production rates of Lithium, Beryllium and Boron (LiBeB) are a necessary component in any calculation of the evolution of these nuclei in the Galaxy. Previous calculations of these rates relied on two assumptions relating to…

Astrophysics · Physics 2009-11-07 J. P. Kneller , J. R. Phillips , T. P. Walker

Building on the phenomenological and microscopic models reviewed in Part I, this second part focuses on network-level mechanisms that generate emergent temperature response curves. We review deterministic models in which temperature…

Molecular Networks · Quantitative Biology 2026-03-11 Simen Jacobs , Julian B. Voits , Nikita Frolov , Ulrich S. Schwarz , Lendert Gelens

An update of the NACRE compilation [Angulo et al., Nucl. Phys. A 656 (1999) 3] is presented. This new compilation, referred to as NACRE II, reports thermonuclear reaction rates for 34 charged-particle induced, two-body exoergic reactions on…

Nuclear Theory · Physics 2015-06-17 Yi Xu , Kohji Takahashi , Stephane Goriely , Marcel Arnould , Masahisa Ohta , Hiroaki Utsunomiya

The relevant energy ranges for stellar nuclear reactions are introduced. Low-energy compound and direct reactions are discussed. Stellar modifications of the cross sections are presented. Implications for experiments are outlined.

High Energy Astrophysical Phenomena · Physics 2015-05-19 T. Rauscher

We investigate the quantitative constraint on the triple-alpha reaction rate based on stellar evolution theory, motivated by the recent significant revision of the rate proposed by nuclear physics calculations. Targeted stellar models were…

Solar and Stellar Astrophysics · Physics 2015-05-28 Takuma Suda , Raphael Hirschi , Masayuki Y. Fujimoto