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1 April 1992 Photo- and collision-induced dissociation of Ar cluster ions
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Photo- and collision- induced dissociation of an argon cluster ion, Arn+, 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 Arn+, 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 Arn+ 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.
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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); doi: 10.1117/12.58131;


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