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Citation: Liu Houxiang*, Li Shutao, Han Jingcheng, Guan Yifu, Zhu Rong, Wu Cunkai. MULTIPHOTON IONIZATION AND FRAGMENTATION STUDY OF ACETONE AT XeCl EXCIMER LASER RADIATION[J]. Acta Physico-Chimica Sinica, ;1988, 4(02): 182-186. doi: 10.3866/PKU.WHXB19880213 shu

MULTIPHOTON IONIZATION AND FRAGMENTATION STUDY OF ACETONE AT XeCl EXCIMER LASER RADIATION

1.
Laboratory of Laser spectroscopy; Anhui Institute of Optics and Fine Mechanics; Academia Sinica

Received Date: 26 August 1986
Available Online: 15 April 1988

Multiphoton ionization and fragmentation of acetone at 308nm laser radiation are studied by using diffuse molecular beam and multiphoton ionization mass spectroscopy. It is found that no parent ions of acetone are produced, but only the frag ment ions at m/e=15 and 43, corresponding to two neutral fragments of CH_3 and CH_3CO generated by photodissociation of acetone, respectively. The inten sities of these ions are proportional to the 3.6th and 3.0th power of the laserintensity, respectively. We argue that these fragment ions are from the ionization of the neutral radicals CH_3 and CH_3CO.
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