Stokes–Raman scattering 

Synonym: Stokes scattering
https://doi.org/10.1351/goldbook.08683
Raman scattering of electromagnetic radiation in which the scattered radiation has lesser energy (lesser wavenumber) than the exciting radiation.
Source:
PAC, 2021, 93, 647. (Glossary of methods and terms used in analytical spectroscopy (IUPAC Recommendations 2019)) on page 764 [Terms] [Paper]