Astrophysical factors: Zero energy vs most effective energy - art. no. 018801

Effective astrophysical factors for nonresonant astrophysical nuclear react ion are usually calculated with respect to a zero-energy limit. In the pres ent work that limit is shown to be very disadvantageous compared to the mor e natural effective-energy limit. The-latter is used in order to modify the thermonuclear reaction rate formula in stellar evolution codes so that it takes into account both plasma and laboratory screening effects.