As you may have noticed, above you will find words for "A dimensionless quantity, denoted by η, used in nuclear astrophysics in the calculation of reaction rates between two nuclei and in the definition of the astrophysical S-factor.". Hover the mouse over the word you'd like to know more about to view its definition. Click to find a better fitting word. Finally, thanks to ChatGPT, the overall results have been greatly improved.