Nuclear reactions in very hot astrophysical plasmas with temperatures T > 1010 K

Kafexhiu, Ervin

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Nuclear reactions in very hot astrophysical plasmas with temperatures T > 10¹⁰ K

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Kafexhiu, Ervin
Division Prof. Dr. Werner Hofmann, MPI for Nuclear Physics, Max Planck Society;

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http://pos.sissa.it/archive/conferences/123/274/Texas%202010_274.pdf
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Citation

Kafexhiu, E. (2011). Nuclear reactions in very hot astrophysical plasmas with temperatures T > 10¹⁰ K. Proceedings of Science, Texas2010: 274, 1-6.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0012-315E-3

Abstract

We use the public available TALYS code to study the spectral and temporal evolution of nuclear reactions in low-density astrophysical plasmas with ion temperatures T>10¹⁰ K. Such studies are of great interest in the context of scientific programs of future low-energy cosmic gamma-ray spectrometry. The reaction rates logarithm have been fitted as a polynomial function of temperature with seven free parameters. This makes this network convenient for calculations of reactions, especially in the case of time-dependent plasma temperature. We study the chemical abundance and gamma-ray lines emissivity evolution, and present some preliminary results for light elements such are D, T, ³He, ⁴He, ⁶Li, ⁷Li, ⁹Be, ¹⁰Be.