hot transition

https://doi.org/10.1351/goldbook.08612
Electronic transition between an excited state and a state in which all vibrational quantum numbers are the same or greater.
Notes:
  1. A hot band arises from a hot transition.
  2. A hot transition has the same changes in vibrational quantum numbers as a fundamental, overtone transition, or sum transition but it originates in an excited vibrational state not the ground state.
Source:
PAC, 2021, 93, 647. (Glossary of methods and terms used in analytical spectroscopy (IUPAC Recommendations 2019)) on page 749 [Terms] [Paper]
Citation: 'hot transition' in IUPAC Compendium of Chemical Terminology, 5th ed. International Union of Pure and Applied Chemistry; 2025. Online version 5.0.0, 2025. https://doi.org/10.1351/goldbook.08612 RIS BibTex EndNote
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