Theoretical and Experimental Investigations of Ionization-Dissociation of Polyatomic Molecules

Qiaoqiao Wang; Mingxing Jin; Dajun Ding; H. Mineo; S. D. Chao; Y. Teranishi; Sheng Hsien Lin; Sheng Hsien Lin

Conference on Lasers and Electro-Optics/Pacific Rim 2009
(Optica Publishing Group, 2009),
paper MB1_3

Theoretical and Experimental Investigations of Ionization-Dissociation of Polyatomic Molecules

Qiaoqiao Wang, Mingxing Jin, Dajun Ding, H. Mineo, S. D. Chao, Y. Teranishi, and Sheng Hsien Lin

Conference on Lasers and Electro-Optics/Pacific Rim 2009

Shanghai China
30 August–3 September 2009
ISBN: 978-1-4244-3830-3

From the session
Ultrafast laser spectroscopy I (MB1)

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Q. Wang, M. Jin, D. Ding, H. Mineo, S. D. Chao, Y. Teranishi, and S. H. Lin, "Theoretical and Experimental Investigations of Ionization-Dissociation of Polyatomic Molecules," in Conference on Lasers and Electro-Optics/Pacific Rim 2009, (Optica Publishing Group, 2009), paper MB1_3.

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Abstract

The Keldysh theory originally developed for the ionization of 1s state of hydrogen atom has been generalized for molecules by introducing the molecular orbital theory and the Born-Oppenheimer approximation. Ionization and dissociation mechanisms of cyclopentanone in the intense 800 nm laser field (10¹³ to 10¹⁴ W/cm²) have been experimentally investigated by using a method of molecular beam and time-of-flight mass spectrometer (TOF-MS). Singly-charged parent ion and numerous fragment ions are observed in the mass spectra, which are analyzed by using the molecular Keldysh theory.

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