Mechanisms of rapid proton capture: rp-process burning in an energetic novae. Image Source: www.phy.ornl.gov

Rapid proton capture (hence “rp”) is a process that synthesizes elements by successive proton absorption and β+ decay; thus, it tracks somewhere between the valley of stability.

The rp-process is one of three nucleosynthesis processes that also includes the s-process and the r-process.

Some or all content above used with permission from J. H. Wittke.