@L03641@ which occurs essentially only during the @I03255@ of a substance by electromagnetic radiation.
Sources: PAC, 1984,
56, 231. (
Nomenclature, symbols, units and their usage in spectrochemical analysis-Part VI: molecular luminescence spectroscopy) on page 233 [
Terms] [
Paper]
PAC, 1994,
66, 2513. (
Nomenclature for radioanalytical chemistry (IUPAC Recommendations 1994)) on page 2519 [
Terms] [
Paper]