Abstract
A new apparatus for depositing intense beams of neutral, mass selected metal clusters in rare gas matrices or on a solid surface has been constructed. Metal cluster cations, produced by Ar+ sputtering, may be energy analyzed and then mass selected in a quadrupole mass filter. The clusters are neutralized by low energy electrons and then co-deposited with a rare gas on a 4 K sapphire window. Matrix samples were interrogated in situ by UV-optical absorption spectroscopy. Good quality neutral Ag spectra were obtained following a 30 min. Kr deposition of a ca. 2.5 nA cm−2 beam of Ag+. Line strength measurements imply matrices containing about 1013 atoms cm−2, corresponding to a neutralization efficiency of about 50%. Preliminary experiments on Ag +2 yielded only Ag spectra, but with a lesser yield, perhaps indicative of incomplete fragmentation.
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For example: Leopold, D.G, Ho, J., Lineberger, W.C.: J. Chem. Phys.86, 1715 (1987); Pettiette, C.L., Yang, S.H., Craycraft, M.J., Conceicao, J., Laaksonen, R.T., Chesnovsky, O., Smalley, R.E.: J. Chem. Phys.88, 5377 (1988)
de Heer, W.A., Selby, K., Kresin, V., Masui, J., Vollmer, M., Châtelain, A., Knight, W.D.: Phys. Rev. Lett.59, 1805 (1987)
For example: Morse, M.D., Hopkins, J.B., Langridge-Smith, P.R.R., Smalley, R.E.: J. Chem. Phys.79, 5316 (1983); Rohlfing, E.A., Valentini, J.J.: Chem. Phys. Lett.126, 113 (1986)
For example: Delacrétaz G., Grant, E.R., Whetten, R.L., Wöste, L., Zwanziger, J.W.: Phys. Rev. Lett.56, 2598 (1986)
Fu, Z., Lemire, G.W., Hamrick, Y.M., Taylor, S., Shui, J-C., Morse, M.: J. Chem. Phys.88, 3524 (1988)
For a recent review see: Moskovits, M.: Metal clusters, Chap. 7. New York: Wiley 1986
See, for example: Garland, D.A., Lindsay, D.M.: J. Chem. Phys.80, 4761 (1984)
Fayet, P., Wöste, L.: Z. Phys. D-Atoms, Molecules and Clusters3, 177 (1986)
Fayet, P.: PhD Thesis No. 684, Ecole Polytechnique Fédérale de Lausanne, 1987
Besocke, K., Berger, S., Hofer, W.O., Littmark, U.: Radiat. Eff.66, 35 (1982)
Allen, J.D., Wolfe, J.P., Schweitzer, G.K.: Int. J. Mass Spectrom. Ion Phys.8, 81 (1972)
Brubaker, W.M.: Adv. Mass Spectrom.4, 293 (1968)
Dawson, P.H.: Int. J. Mass Spectrom. Ion Phys.6, 33 (1971)
Rivoal, J.C., Grisolia, C., Lignieres, J., Kreisle, D., Fayet, P., Wöste, L.: Z. Phys. D-Atoms, Molecules and Clusters 12 (1989) (this issue)
Schultze, W., Becker, H.U., Abe, H.: Chem. Phys.35, 177 (1978)
By moving F1 vertically, we were able to measure the ion beam profile and estimate that it's area at the sapphire window was about 1.5 cm2
From gas dynamic considerations and by observation of interference fringes
This expression may be derived from results given in (e.g.): Steinfeld, J.I.: Molecules and radiation. Cambridge MA, London: MIT press 1978
Radzig, A.A., Smirnov B.M.: Reference data on atoms, molecules and ions, Chap. 7. Berlin, Heidelberg, New York: Springer 1985
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Lindsay, D.M., Meyer, F. & Harbich, W. Neutralization and matrix deposition experiments on mass-selected silver atoms and clusters. Z Phys D - Atoms, Molecules and Clusters 12, 15–18 (1989). https://doi.org/10.1007/BF01426896
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DOI: https://doi.org/10.1007/BF01426896