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Related papers: r-Java 2.0: the nuclear physics

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If the r-process occurs deep within a Type II supernova, probably the most popular of the proposed sites, abundances of r-process elements may be altered by the intense neutrino flux. We point out that the effects would be especially…

Astrophysics · Physics 2009-10-28 W. C. Haxton , K. Langanke , Y. -Z. Qian , P. Vogel

Understanding the details of $r$-process nucleosynthesis in binary neutron star mergers (BNSM) ejecta is key to interpreting kilonova observations and identifying the role of BNSMs in the origin of heavy elements. We present a…

High Energy Astrophysical Phenomena · Physics 2024-10-04 Fabio Magistrelli , Sebastiano Bernuzzi , Albino Perego , David Radice

Unknown neutron-capture reaction rates remain a significant source of uncertainty in state-of-the-art $r$-process nucleosynthesis reaction network calculations. As the $r$-process involves highly neutron-rich nuclei for which direct…

Nuclear Experiment · Physics 2020-01-08 A. C. Larsen , S. N. Liddick , A. Spyrou , M. Guttormsen , F. L. Bello Garrote , J. E. Midtbø , T. Renstrøm

EASY-II is designed as a functional replacement for the previous European Activation System, EASY-2010. It has extended nuclear data and new software, FISPACT-II, written in object-style Fortran to provide new capabilities for predictions…

Nuclear Theory · Physics 2015-06-17 Jean-Christophe Sublet , James Eastwood , Guy Morgan , Arjan Koning , Dimitri Rochman

We investigate the impact of the model estimating the masses of exotic nuclei on r-process nucleosynthesis, assessing the dependence of the abundance distribution on the specific properties of nuclear masses. By decomposing theoretical…

Nuclear Theory · Physics 2026-04-28 Samuel A. Giuliani , Gabriel Martínez-Pinedo , Andreas Bauswein , Vimal Vijayan

The description of final-state interactions (FSI) in the large phase space probed in neutrino experiments poses a great challenge. In neutrino experiments, which operate under semi-inclusive conditions, cascade models are commonly used for…

Neutral atom arrays have recently emerged as a promising platform for quantum information processing. One important remaining roadblock for the large-scale application of these systems is the ability to perform error-corrected quantum…

Recent studies suggest that binary neutron star (NS-NS) mergers robustly produce the heavy r-process nuclei above the atomic mass number A ~ 130 because of their ejecta consisting of almost pure neutrons (electron fraction of Y_e < 0.1).…

Solar and Stellar Astrophysics · Physics 2015-06-18 Shinya Wanajo , Yuichiro Sekiguchi , Nobuya Nishimura , Kenta Kiuchi , Koutarou Kyutoku , Masaru Shibata

In contrast to regular core-collapse supernovae, explosions of rapidly rotating massive stars can develop jets, fast collimated outflows directed along the rotational axis. Depending on the rate of rotation and the magnetic field strength…

High Energy Astrophysical Phenomena · Physics 2023-03-23 M. Obergaulinger , M. Reichert

We study in detail the ejecta conditions and theoretical nucleosynthetic results for 18 three-dimensional core-collapse supernova (CCSN) simulations done by F{\sc ornax}. {Most simulations are carried out to at least 3 seconds after bounce,…

High Energy Astrophysical Phenomena · Physics 2024-01-17 Tianshu Wang , Adam Burrows

Simulations of nucleosynthesis in astrophysical environments are at the intersection of nuclear physics reaction rate research and astrophysical applications, for example in the area of galactic chemical evolution or near-field cosmology.…

We present an open-source software for the simulation of observables in magnetic resonance experiments, including nuclear magnetic/quadrupole resonance NMR/NQR and electron spin resonance (ESR), developed to assist experimental research in…

This paper presents NT-Java-1.1B, an open-source specialized code language model built on StarCoderBase-1.1B, designed for coding tasks in Java programming. NT-Java-1.1B achieves state-of-the-art performance, surpassing its base model and…

High quality nuclear data is the most fundamental underpinning for all neutron metrology applications. This paper describes the release of version II of the International Reactor Dosimetry and Fusion File (IRDFF-II) that contains a…

The production of heavy-mass elements due to the rapid neutron-capture mechanism (r-process) is associated with astrophysical scenarios, such as supernovae and neutron-star mergers. In the r-process the capture of neutrons is followed by…

Nuclear Theory · Physics 2021-05-10 M. M. Saez , K. J. Fushimi , M. E. Mosquera , O. Civitarese

The electrostatic, entropic and surface interactions between a macroion (nanoparticle or biomolecule), surrounding ions and water molecules play a fundamental role in the behavior and function of colloidal systems. However, the molecular…

Computational Physics · Physics 2019-07-24 Marcelo Marucho

We investigate core-collapse supernova (CCSN) nucleosynthesis with self-consistent, axisymmetric (2D) simulations performed using the radiation-hydrodynamics code Chimera. Computational costs have traditionally constrained the evolution of…

Solar and Stellar Astrophysics · Physics 2017-06-27 J. Austin Harris , W. Raphael Hix , Merek A. Chertkow , C. -T. Lee , Eric J. Lentz , O. E. Bronson Messer

Neutron star mergers (NSMs) are rapid neutron capture (r-process) nucleosynthesis sites, which eject materials at high velocities, from 0.1c to as high as 0.6c. Thus the r-process nuclei ejected from a NSM event are sufficiently energetic…

High Energy Astrophysical Phenomena · Physics 2020-10-27 Xilu Wang , Brian D. Fields , Matthew Mumpower , Trevor Sprouse , Rebecca Surman , Nicole Vassh

The main role of the ITER Radial Neutron Camera (RNC) diagnostic is to measure in real-time the plasma neutron emissivity profile at high peak count rates for a time duration up to 500 s. Due to the unprecedented high performance conditions…

We follow the longterm evolution of the dynamic ejecta of neutron star mergers for up to 100 years and over a density range of roughly 40 orders of magnitude. We include the nuclear energy input from the freshly synthesized, radioactively…

High Energy Astrophysical Phenomena · Physics 2014-02-05 S. Rosswog , O. Korobkin , A. Arcones , F. -K. Thielemann , T. Piran