  The importance of measuring Q-values in rapid proton capture process has been
investigated. The microscopic optical model, derived using a nucleon nucleon
interaction and densities from relativistic mean field calculations, has been
utilized to calculate the reaction rates. It has been observed that the
Q-values involved in the reactions at waiting points at A = 60 and 64 are very
important in determining the final abundance of the process. Some other
Q-values also play a crucial role in the final abundance of nuclei near the end
point of the process.
