Carbon cluster ion (C+n, 11≤n≤23) reactivity investigated via reaction with naphthalene: Kinetic energy dependence and evidence for long-lived complexes

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Abstract
Reactions of carbon cluster ions (C+n, 11≤n≤23) with naphthalene have been investigated in a Fourier transform ion cyclotron resonance mass spectrometer (FTICR‐MS). Reactive channels include the formation of adduct ions stabilized by radiative association, three‐body collisions and loss of a hydrogen atom. Radiative association competes favorably with the dissociation of the ion/neutral complex and estimates of the average complex lifetime derived via kinetic modeling range from 28 to 59 (±50%) ms. The reactions have been found to be extremely dependent on the kinetic energy of the cluster ion. This dependency has been exploited to determine the average kinetic energy of the desorbed ions by comparison of reaction product distributions obtained as a function of kinetic energies. Calculated values were on the order of the trapping potential to twice that value (2–4 eV).

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