AI Article Synopsis
- The study investigates the photodissociation of the (ICN)(2) dimer between 265 to 270 nm using advanced mass spectrometry techniques.
- Both I(+) and I(2)(+) ions are detected in the mass spectra, with I(2)(+) stemming from resonant ionization of I(2) fragments, not from the dimer itself.
- Findings indicate that the dissociation paths for I(2)(+) to I(+) exhibit parallel characteristics, and kinetic energy distributions suggest that produced I(2) fragments are in a low-energy state, supported by theoretical calculations on the dissociation mechanism.
Article Abstract
Photodissociation of (ICN)(2) dimer from 265 to 270 nm are studied using time-of-flight mass spectrometry combined with velocity imaging technique. Both I(+) and I(2) (+) ions are found in the mass spectra. The I(2) (+) ions result from (1+1) resonant ionization of the neutral I(2) fragment that is produced in the photodissociation of dimer, but not from dissociative ionization of (ICN)(2); i.e., (ICN)(2) (+)+hnu-->I(2) (+)+2CN. The dissociation channels of I(2) (+) leading to I(+) are all found with parallel character. The total kinetic energy distributions and anisotropy parameters of the I(+) channels produced by (ICN)(2) are almost the same as those from a neutral I(2) sample, thereby confirming that the I(2) fragments are obtained in cold state. With the aid of ab initio calculations, a plausible dissociation mechanism is proposed.
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| http://dx.doi.org/10.1063/1.3148376 | DOI Listing |
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