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Dresden 2006 – scientific programme

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O: Oberflächenphysik

O 34: Particles and clusters II

O 34.7: Talk

Thursday, March 30, 2006, 12:45–13:00, WIL A317

Setup for the Study of Mass Selected Clusters at Surfaces with Low-Temperature STM and UPS — •Stefanie Krause1, Thomas Irawan1, Markus Bieletzki1, Heinz Hövel1, Chunrong Yin2, and Bernd von Issendorff21Universität Dortmund, Experimentelle Physik I, 44221 Dortmund, Germany — 2Universität Freiburg, Fakultät für Physik, 79104 Freiburg, Germany

We measure mass spectra of size selected Ag clusters with a cluster machine consisting of a magnetron sputter gas aggregation source [1], a differential pumping stage with a cryo pump and a high transmission infinite range mass selector [2]. In current experiments we extend these studies to the deposition of mass selected clusters on rare gas layers and different substrate systems. For these samples low-temperature STM and UPS [3] will be compared with photoelectron spectoscopy for the same clusters in a free cluster beam.

[1] H. Haberland, M. Mall, M. Moseler, Y. Qiang, Th. Reiners and Y. Thurner, J. Vac. Sci. Technol. A 12, 2925 (1994).

[2] B. von Issendorff and R. E. Palmer, Rev. Sci. Instr. 70, 4497 (1999).

[3] H. Hövel, T. Becker, D. Funnemann, B. Grimm, C. Quitmann and B. Reihl, J. Electron Spectros. Rel. Phenom. 88-91, 1015 (1998).

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