Title :
Theoretical and experimental investigations of ionization-dissociation of polyatomic molecules
Author :
Wang, Qiaoqiao ; Jin, Mingxing ; Ding, Dajun ; Mineo, H. ; Chao, S.D. ; Teranishi, Y. ; Lin, Sheng Hsien
Author_Institution :
Inst. of Atomic & Mol. Phys., Jilin Univ., Changchun, China
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.
Keywords :
molecule-photon collisions; orbital calculations; organic compounds; photodissociation; photoionisation; time of flight mass spectra; Born-Oppenheimer approximation; TOF-MS; cyclopentanone; fragment ions; hydrogen atom; intense laser field; molecular Keldysh theory; molecular beam method; molecular orbital theory; polyatomic molecule dissociation; polyatomic molecule ionization; singly-charged parent ion; time-of-flight mass spectrometer; wavelength 800 nm; Atomic beams; Atomic measurements; Chaos; Chemistry; Hydrogen; Ionization; Laser theory; Mass spectroscopy; Physics; High-power laser; dissociation; ionization;
Conference_Titel :
Lasers & Electro Optics & The Pacific Rim Conference on Lasers and Electro-Optics, 2009. CLEO/PACIFIC RIM '09. Conference on
Conference_Location :
Shanghai
Print_ISBN :
978-1-4244-3829-7
Electronic_ISBN :
978-1-4244-3830-3
DOI :
10.1109/CLEOPR.2009.5292672
