Influence of Inelastic Processes on Fast-Atom-Surface Diffraction

Aigner, F.; Simonovic, N.; Solleder, B.; Wirtz, Ludger; Burgdörfer, Joachim

doi:10.1088/1742-6596/133/1/012014

Reference : Influence of Inelastic Processes on Fast-Atom-Surface Diffraction


	Document type :	Scientific congresses, symposiums and conference proceedings : Paper published in a journal
	Discipline(s) :	Physical, chemical, mathematical & earth Sciences : Physics
	To cite this reference:	http://hdl.handle.net/10993/10332

Title :	Influence of Inelastic Processes on Fast-Atom-Surface Diffraction
Language :	English
Author, co-author :	Aigner, F. [Vienna University of Technology > Institute for Theoretical Physics]
	Simonovic, N. [Institute for Theoretical Physics, Vienna University of Technology / Institute of Physics, Belgrade]
	Solleder, B. [Vienna University of Technology > Institute for Theoretical Physics]
	Wirtz, Ludger [CNRS > IEMN]
	Burgdörfer, Joachim [Vienna University of Technology > Institute for Theoretical Physics]
Publication date :	2008
Journal title :	Journal of Physics: Conference Series
Publisher :	Institute of Physics Publishing IOP
Volume :	133
Special issue title :	24TH SUMMER SCHOOL AND INTERNATIONAL SYMPOSIUM ON THE PHYSICS OF IONIZED GASES
Peer reviewed :	Yes (verified by ORBi^lu)
On invitation :	Yes
Audience :	International
ISSN :	1742-6588
e-ISSN :	1742-6596
City :	Bristol
Country :	United Kingdom
Event name :	24TH SUMMER SCHOOL AND INTERNATIONAL SYMPOSIUM ON THE PHYSICS OF IONIZED GASES
Event date :	25–29 August 2008
Abstract :	[en] Diffraction of fast helium atoms at alkali-halide surfaces under grazing angles of incidence shows intriguing diffraction patterns. The persistence of quantum coherence is remarkably strong, even though high surface temperatures and high (keV) kinetic energies of the incident atoms would strongly suggest the dominance of dissipative and decohering processes. The main source of decoherence is the excitation or absorption of surface vibrations upon impact. The momentum transfer between the surface and the incident helium atom depends on the amplitude of the thermal vibrations of the surface atoms and the energy of the incident particle. We present an ab initio simulation of the quantum diffraction of fast helium beams at a LiF (100) surface in the < 110 > direction, and compare with recent experimental diffraction data.
Permalink :	http://hdl.handle.net/10993/10332
DOI :	10.1088/1742-6596/133/1/012014
Commentary :	AUG 25-29, 2008 24th Summer School and International Symposium on Physics of Ionized Gases Novi Sad SERBIA Malovic, G Popovic, L Dimitrijevic, M

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