Photo- and collision-induced dissociation of Ar cluster ions

Tamotsu Kondow; Takeshi Nagata; Shinji Nonose

doi:10.1117/12.58131

1 April 1992 Photo- and collision-induced dissociation of Ar cluster ions

Tamotsu Kondow, Takeshi Nagata, Shinji Nonose

Proceedings Volume 1638, Optical Methods for Time- and State-Resolved Chemistry; (1992) https://doi.org/10.1117/12.58131
Event: OE/LASE '92, 1992, Los Angeles, CA, United States

Abstract

Photo- and collision- induced dissociation of an argon cluster ion, Ar_n⁺, were investigated by use of mass spectrometry. The kinetic and angular distributions of the ionic and neutral photofragments revealed two reaction pathways; dissociation of the trimeric core ion and evaporation from its solvation shell. In the Kr and Ne collisions with Ar_n⁺, the size- and collision energy- dependences of the dissociation cross sections were explained in the scheme of the charge - induced dipole, and induced dipole - induced dipole scatterings. Conversion efficiency of the collision energy into the internal energy of Ar_n⁺ was found to be proportional to the internal degrees of freedom. The upper limit of the conversion efficiency was estimated to be about 60 % in the collision energy of 0.2 eV.

Citation Download Citation

Tamotsu Kondow, Takeshi Nagata, and Shinji Nonose "Photo- and collision-induced dissociation of Ar cluster ions", Proc. SPIE 1638, Optical Methods for Time- and State-Resolved Chemistry, (1 April 1992); https://doi.org/10.1117/12.58131

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