Delayed photodissociation of the tin cluster Sn22−
Literature Information
Alexander Jankowski, Paul Fischer, Klavs Hansen, Lutz Schweikhard
Millisecond-delayed photodissociation of gas-phase Sn22− clusters stored in a Penning trap is investigated as a function of excitation energy. Sn15− is the only significant charged fragment, indicative of the break-off of neutral heptamers. Fits of the time-resolved fragmentation require a distribution of decay constants, caused by the finite width of the internal energy distribution of the cluster ensemble prior to photoexcitation. A lower limit for the dissociation energy for the loss of Sn7 is determined to be 2.1(1) eV, a factor of two above literature quantum chemical calculations.
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