Resonances and the thermonuclear reaction rate

preprint2003arXivOpen access

Abstract

We present an approximate analytic expression for thermonuclear reaction rate of charged particles when the cross section contains a single narrow or wide resonance described by a Breit-Wigner shape. The resulting expression is uniformly valid as the effective energy and resonance energy coalesce. We use our expressions to calculate the reaction rate for 12^{12}C(p,γγ)13^{13}N.

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