Gamow peak in thermonuclear reactions at high temperatures

J. R. Newton, C. Iliadis, A. E. Champagne, A. Coc, Y. Parpottas, C. Ugalde

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Abstract

The Gamow peak represents one of the most important concepts in the study of thermonuclear reactions in stars. It is widely used in order to determine, at a given plasma temperature, the effective stellar energy region in which most charged-particle induced nuclear reactions occur. It is of importance in the design of nuclear astrophysics measurements, including those involving radioactive ion beams, and for the determination of stellar reaction rates. We demonstrate that the Gamow peak concept breaks down under certain conditions if a nuclear reaction proceeds through narrow resonances at elevated temperatures. It is shown that an effective stellar energy window does indeed exist in which most thermonuclear reactions take place at a given temperature, but that this energy window can differ significantly from the commonly used Gamow peak. We expect that these findings are especially important for thermonuclear reactions in the advanced burning stages of massive stars and in explosive stellar environments.

Original languageEnglish (US)
Article number045801
JournalPhysical Review C - Nuclear Physics
Volume75
Issue number4
DOIs
StatePublished - Apr 3 2007
Externally publishedYes

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ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Newton, J. R., Iliadis, C., Champagne, A. E., Coc, A., Parpottas, Y., & Ugalde, C. (2007). Gamow peak in thermonuclear reactions at high temperatures. Physical Review C - Nuclear Physics, 75(4), [045801]. https://doi.org/10.1103/PhysRevC.75.045801