Abstract
We have studied several decay processes of potassium clusters and found that a dimer-decay mechanism can explain the observed lowest abundance of K10 in the K n mass spectra. Total-energy curves for decay processes are calculated using a jellium-background model for positive-ion cores and the local-spin-density-functional approximation for valence electrons. The energy-barrier height for a dimer decay of K10 from the energy-minimum point is found to be 0.18 eV, which is a reasonable magnitude for the decay to take place thermally in the experiment. The monomer decay of K9, and the dimer decay of K11, which are expected to be the most favorable decays of K9 and K11, are found to have high barriers. Monomer and dimer decays of K8 are also studied and the monomer decay is found to be more favorable, in accord with the high-nozzle-temperature mass spectrum.
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References
de Heer, W.A., Knight, W.D., Chou, M.Y., Cohen, M.L.: Solid State Phys. Ehrenreich, H., Seitz, F, Turnbull, D. (eds.), vol. 40, pp. 93–181. New York: Academic Press 1987.
Knight, W.D., Clemenger, K., de Heer, W.A., Saunders, W.A., Chou, M.Y., Cohen, M.L.: Phys. Rev. Lett. 52, 2141 (1984).
Knight, W.D., de Heer, W.A., Clemenger, K., Saunders, W.A.: Solid State Commun. 53, 445 (1985).
Martins, J.L., Car, R., Buttet, J.: Surf. Sci. 106, 265 (1981).
Ekardt, W.: Phys. Rev. B 29, 1558 (1984).
Chou, M.Y., Cleland, A., Cohen, M.L.: Solid State Commun. 52, 645 (1984).
Ishii, Y., Ohnishi, S., Sugano, S.: Phys. Rev. B 33, 5271 (1986).
Saito, S., Cohen, M.L.: Phys. Rev. B 38, 1123 (1988).
Saito, S., Ohnishi, S.: Phys. Rev. Lett. 59, 190 (1987).
de Heer, W.A., Selby, K., Kresin, V., Masui, J., Vollmer, M, Châtelain, A., Knight, W.D.: Phys. Rev. Lett. 59, 1805 (1987).
Ishii, Y., Saito, S., Ohnishi, S.: Z. Phys. D-Atoms, Molecules, and Clusters 7, 289 (1987).
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© 1989 Springer-Verlag
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Saito, S., Cohen, M.L. (1989). Jellium-model calculation for monomer and dimer decays of some potassium clusters. In: Chapon, C., Gillet, M.F., Henry, C.R. (eds) Small Particles and Inorganic Clusters. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-74913-1_46
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DOI: https://doi.org/10.1007/978-3-642-74913-1_46
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