This page discusses the concept of an analyte in an excited state and the processes of relaxation to its lower energy state. It elaborates on how excess energy is released in various ways, including a...This page discusses the concept of an analyte in an excited state and the processes of relaxation to its lower energy state. It elaborates on how excess energy is released in various ways, including as heat through vibrational relaxation, through photochemical reactions, or as a photon via electromagnetic radiation.