Pulsed photodissociation in an ion cyclotron resonance trap: extending the time range for unimolecular dissociation studies of metal clusters
✍ Scribed by L. Schweikhard; G. Dietrich; U. Hild; S. Krückeberg; K. Lützenkirchen; C. Walther
- Publisher
- John Wiley and Sons
- Year
- 1997
- Tongue
- English
- Weight
- 105 KB
- Volume
- 11
- Category
- Article
- ISSN
- 0951-4198
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✦ Synopsis
A Penning trap has been applied to the study of photoinduced unimolecular dissociation of Ag 10 + . The cluster decays by the evaporation of a neutral atom. At photon energies of 1.75 eV and 1.59 eV lifetimes of 330 ± 70 µs and 11.1 ± 2.9 ms, respectively, have been measured. By the use of statistical models the dissociation energy is determined from the observed lifetimes and their corresponding excitation energies. The values from both measurements agree, indicating the reliability of free cluster decay studies at lifetimes in the 10 ms range. This development may open new possibilities, e.g. the investigation of isomeric states and of radiative cooling.