Newton diagram

https://doi.org/10.1351/goldbook.N04137
A vector diagram used to show the relationship between initial and final velocities or momenta in a two-particle @[email protected] process. It is commonly used to relate laboratory and centre-of-mass coordinates.
Source:
PAC, 1996, 68, 149. (A glossary of terms used in chemical kinetics, including reaction dynamics (IUPAC Recommendations 1996)) on page 175 [Terms] [Paper]