Hammond–Herkstroeter plot

https://doi.org/10.1351/goldbook.H02733
See: energy transfer plot (in photochemistry)
Source:
PAC, 1996, 68, 2223. 'Glossary of terms used in photochemistry (IUPAC Recommendations 1996)' on page 2245 (https://doi.org/10.1351/pac199668122223)