Sensitivity of Isotope Yields to Reaction Rates in the Alpha Rich Freezeout

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Scientific paper

The alpha-rich freezeout from nuclear statistical equilibrium occurs during type II (core-collapse) supernovae when the shock wave passes through the Si shell of the star. The nuclei are heated to high temperature and broken down into nucleons and alpha particles. These subsequently reassemble as the material expands and cools. The alpha-rich freezeout is responsible for a number of important supernova observables. In this paper we introduce a web-based tool that displays the results of a reaction-rate sensitivity study of alpha-rich freezeout yields. This tool permits the user to identify nuclear reactions that govern the synthesis of important observables from the alpha-rich freezeout. The tool is intended to aid in the identification of nuclear reaction rates important for measurement.

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