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Generation of ArnH3+ cluster ions by laser vaporization and their black-body radiation induced dissociation
Domenii publicaţii > Chimie + Tipuri publicaţii > Articol în revistã ştiinţificã
Autori: Beyer MK, Savchenko EV, Balaj OP, Balteanu I, Fox-Beyer BS, Bondybey VE
Editorial: PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 6 (6), p.1128-1132, 2004.
Rezumat:
Arn+H3 ions are produced in a laser vaporization source, and their stability against black-body radiation is tested in an FT-ICR mass spectrometer. Using a magnesium target and hydrogen doped argon as carrier gas, Arn+H3 are formed with n = 1-3 in large quantities and traces of n = 4. Arn+H, n = 1-3 are also present. Both Ar3+H3 and Ar2+H3 are heated by room temperature black-body radiation and decay on a timescale of seconds. The observed rate constants are compared with recently calculated IR spectra. The results are in agreement with the presence of strong IR absorptions around 350 cm(-1), which may serve as a fingerprint for the identification of H-3(+) in solid argon.
Cuvinte cheie: MATRIX ISOLATION TECHNIQUE; RARE-GAS SOLIDS; INFRARED-SPECTRUM; ARGON MATRIX; HYDROGEN; SPECTROSCOPY; ATOMS; FRAGMENTATION; DIFFUSION; MOLECULES