r-Java : An r-process Code and Graphical User Interface for Heavy-Element Nucleosynthesis

Abstract

We present r-Java, an r-process code for open use, that performs r-process nucleosynthesis calculations. Equipped with a simple graphical user interface, r-Java is capable of carrying out nuclear statistical equilibrium (NSE) as well as static and dynamic r-process calculations for a wide range of input parameters. In this introductory paper, we present the motivation and details behind r-Java, and results from our static and dynamic simulations. Static simulations are explored for a range of neutron irradiation and temperatures. Dynamic simulations are studied with a parameterized expansion formula. Our code generates the resulting abundance pattern based on a general entropy expression that can be applied to degenerate as well as non-degenerate matter, allowing us to track the rapid density and temperature evolution of the ejecta during the initial stages of ejecta expansion. At present, our calculations are limited to the waiting-point approximation. We encourage the nuclear astrophysics community to provide feedback on the code and related documentation, which is available for download from the website of the Quark-Nova Project: http://quarknova.ucalgary.ca/

arXiv comment12 journal pages, 10 figures. The code (r-Java), manual, video tutorial and examples (project files) can be accessed at : http://quarknova.ucalgary.ca/software/rJava/

References in corpus (22)

• Nuclear Ground-State Masses and Deformations
• Nucleosynthesis in neutrino-driven winds: I. The physical conditions
• The Extremely Metal-Poor, Neutron-Capture-Rich Star CS 22892-052: A Comprehensive Abundance Analysis
• Where, oh where has the r-process gone?
• The Physics of Protoneutron Star Winds: Implications for r-Process Nucleosynthesis
• General relativistic effects on neutrino-driven wind from young, hot neutron star and the r-process nucleosynthesis
• The r-Process in Neutrino-Driven Winds from Nascent, "Compact" Neutron Stars of Core-Collapse Supernovae
• Nucleosynthesis in the Outflow from Gamma Ray Burst Accretion Disks
• Probing the Neutron-Capture Nucleosynthesis History of Galactic Matter
• The r-process in supernova explosions from the collapse of O-Ne-Mg cores
• Supernovae versus Neutron Star Mergers as the Major r-Process Sources
• The Origin of the Heavy Elements: Recent Progress in the Understanding of the r-Process
• Quark-Nova
• General relativistic effects in the neutrino-driven wind and r-process nucleosynthesis
• r-Process in Prompt Supernova Explosions Revisited
• Neutrino Emission and Mass Ejection in Quark Novae
• Thermonuclear Kinetics in Astrophysics
• The r-process nucleosynthesis: a continued challenge for nuclear physics and astrophysics
• Numerical Simulation of the Hydrodynamical Combustion to Strange Quark Matter
• Supernova SN2006gy as a first ever Quark Nova?
• Nucleosynthesis in neutron-rich ejecta from quark-novae
• Proton-Rich Nuclear Statistical Equilibrium

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