Author : Clifford H. Watson
Publisher :
ISBN 13 :
Total Pages : 29 pages
Book Rating : 4.:/5 (227 download)
Book Synopsis Photodissociation of Gaseous Ions Formed by Laser Desorption by : Clifford H. Watson
Download or read book Photodissociation of Gaseous Ions Formed by Laser Desorption written by Clifford H. Watson and published by . This book was released on 1986 with total page 29 pages. Available in PDF, EPUB and Kindle. Book excerpt: Both pulsed and gated continuous wave carbon dioxide lasers have been employed to desorb ions and then to photodissociate them in a Fourier transform ion cyclotron resonance mass spectrometer. Pulsed CO2 laser irradation was most successful in laser desorption experiments, while a gated continuous wave laser was used for a majority of the successful infrared multiphoton dissociation studies. Fragmentation of ions with m/z values in the range 400-1300 was induced by infrared multiphoton dissocation. Such photodissociation was successfully coupled with laser desorption for a number of different classes of compounds. Either two sequential pulses from a pulsed carbon dioxide laser (one for desorption and one for dissociation) or one desorption pulse followed by gated continuous wave irradation to bring about dissociation were ultilized. Keywords: Carbon Dioxide Lasers; Fourier Transform; Ion Cyclotron Resonance; Mass Spectrometry; Infrared Multiphoton Dissociation; Laser Desorption.