Phosphorescence emission laser-induced

A mechanism for the 325 to 360-nm region (up to the 2 41 transition) should be consistent with the following observations on H2CO (1) the value of rp decreases from 82 ns for the 41-level to 11 ns for the 2 4 level (164) (2) no laser-induced phosphorescence emission has been observed.by exciting into the A 2 X Ap system as well as into the aJA2 X A- system... 

Fluorescence and phosphorescence are types of luminescence, ie, emission attributed to selective excitation by previously absorbed radiation, chemical reaction, etc, rather than to the temperature of the emitter. Laser-induced and x-ray fluorescence are important analytical techniques (see... 

This work reports the use of benzophenone, a very well characterized probe, to study new hosts (i.e., modified cellidoses grafted with alkyl chains bearing 12 carbon atoms) by surface esterification. Laser-induced room temperature luminescence ofair-equilibrated or argon-purged solid powdered samples of benzophenone adsorbed onto the two modified celluloses, which will be named C12-1500 and Cl2-1700, revealed the existence of a vibrational-ly structured phosphorescence emission of benzaphenone in the case where ethanol was used for sample preparation, while a nonstructured emission of... 

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