Molecular ionization of cyclohexanone in femtosecond laser fields: An application of ADK theory

Q. Q. Wang, H. Mineo, D. Wu, M. X. Jin, C. H. Chin, Yoshiaki Teranishi, S. D. Chao, D. Ding, S. H. Lin

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Abstract

The mechanisms of ionization and dissociation of cyclohexanone (C 6H10O) in a 90 fs, 788 nm linearly polarized laser field ranging from 1013 to 1014 W/cm2 by a time-of-flight mass spectrometer (TOF-MS) have been investigated. The ion yields as a function of laser intensity have been measured experimentally. By comparison with the Ammosov-Delone-Krainov (ADK) theory based on a hydrogen-like model, the ionization mechanism of cyclohexanone in this intense femtosecond laser field has been understood. Considering the importance of molecular nuclear motions, we propose that the Franck-Condon (F-C) factor can provide the excess vibrational energy in the molecular ion. This energy is required for the decomposition of the molecular ion which finally results in the observed mass spectrum.

Original languageEnglish
Pages (from-to)1671-1676
Number of pages6
JournalLaser Physics
Volume19
Issue number8
DOIs
StatePublished - 1 Aug 2009

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    Wang, Q. Q., Mineo, H., Wu, D., Jin, M. X., Chin, C. H., Teranishi, Y., Chao, S. D., Ding, D., & Lin, S. H. (2009). Molecular ionization of cyclohexanone in femtosecond laser fields: An application of ADK theory. Laser Physics, 19(8), 1671-1676. https://doi.org/10.1134/S1054660X09150419