laser Raman microanalysis (LRMA)
Any technique in which a specimen is bombarded with a finely focused @[email protected] beam (diameter less than \(10\ \unicode[Times]{x3BC}\text{m}\)) in the @[email protected] or @[email protected] range and the intensity versus @[email protected] function of the Raman radiation is recorded yielding information about vibrational states of the excited substance and therefore also about functional groups and chemical bonding.
Orange Book, 2nd ed., p. 249 [Terms] [Book]