excimern.

1960 Stevens & Hutton in Nature 25 June 1046/2 These properties of the collisionally formed excited dimer which has virtually the lifetime of a triplet state and the multiplicity of a singlet state are those of an ideal sensitizer…We suggest the term ‘excimer’ be used to distinguish it from the short-lived dimer excited directly in solutions exhibiting an absorption spectrum dependent on concentration.

1962 Stevens & Hutton in Nature 6 Oct. 34/2 The difference by a factor of 2 between the excimer components of the observed mixture spectrum Z and (A+B) is therefore attributed to ‘mixed excimers’ (AB)*.

1972 C. H. DePuy & O. L. Chapman Molecular Reactions & Photochem. iv. 53 These dimers may be formed via an excimer..derived from the ³(π, π*) cyclohexenone and a molecule of ground state cyclohexenone.

1979 Mataga & Ottolenghi in R. Foster Molecular Assoc. II. i. 2 Excimer formation has now been observed for a multitude of aromatic hydrocarbons and their derivatives in fluid solutions. Excimers are also known in crystals and in low-temperature rigid solvents.

1973 S. E. Harris Investigation Laser Dynamics (NASA Rep. CR-136024) Studies of the sodium-xenon excimer laser.

1985 Time 11 Mar. 21/2 Excimer lasers..produce beams of short wavelengths that could destroy a missile by focusing on it for only a second.

1986 New Scientist 13 Nov. 44/1 The excimer laser..emits ultraviolet light that cuts and marks materials without damaging them with heat…They are gas lasers that emit light when a halogen atom and a rare gas atom combine temporarily.