Delayed ionization and delayed atomic ion emission of Ti and V metallocarbohedrenes. Evidence for collective electronic effects
✍ Scribed by B.D May; S.F Cartier; A.W Castleman Jr.
- Book ID
- 103035461
- Publisher
- Elsevier Science
- Year
- 1995
- Tongue
- English
- Weight
- 534 KB
- Volume
- 242
- Category
- Article
- ISSN
- 0009-2614
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✦ Synopsis
Investigations of the ionization of titanium and vanadium carbon clusters reveal prompt ionization for the entire range of species produced, and a significant delayed ion signal for the metallocarbohedrenes (Met-Cars), M8C12. At high laser fluences, emission of delayed atomic metal ions is also observed as a second ionization channel. Neither channel exhibits a dependence on excitation wavelength, but strong laser fluence dependencies are seen. The findings are consistent with thermionic emission from the Met-Car. Delayed atomic emission resulting from further excitation to highly excited states of Met-Cars occurs in an energy range where a giant dipole resonance has been predicted.