Time-resolved two-color photoacoustic and multiphoton ionization spectroscopy of aniline

Journal Article · Tue May 15 04:00:00 EDT 1984 · J. Chem. Phys.; (United States)

DOI:https://doi.org/10.1063/1.446501· OSTI ID:7001455

Moll, D J; Parker, Jr, G R; Kuppermann, A

The multiphoton ionization and photoacoustic signals from aniline have been detected as a function of time delay between two laser pulses of different wavelength. The first pulse excited the S/sub 0/ ..-->.. S/sub 1/ 0--0 transition. The second pulse either excited S/sub 1/ to a higher singlet state, or a triplet state produced by intersystem crossing to a higher triplet state, depending on the time delay between pulses. Both ionization and dissociation processes are observed. By varying the conditions of excitation it appears that a given amount of energy can be selectively channeled almost exclusively into either ionization or dissociation pathways. The results are explained using a simple Franck--Condon factor model.

• Research Organization: Arthur Amos Noyes Laboratory of Chemical Physics, California Institute of Technology, Pasadena, California 91125
• OSTI ID: 7001455
• Journal Information: J. Chem. Phys.; (United States), Journal Name: J. Chem. Phys.; (United States) Vol. 80:10; ISSN JCPSA
• Country of Publication: United States
• Language: English

Related Subjects

640302* -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Properties & Theory
74 ATOMIC AND MOLECULAR PHYSICS
AMINES
ANILINE
AROMATICS
DISSOCIATION
ENERGY-LEVEL TRANSITIONS
FRANCK-CONDON PRINCIPLE
IONIZATION
MULTI-PHOTON PROCESSES
ORGANIC COMPOUNDS
PHOTOACOUSTIC SPECTROSCOPY
PHOTOIONIZATION
SPECTROSCOPY