De Broglie wave phase shifts induced by surfaces closer than 25 nm

Alexander D Cronin, John D. Perreault

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Four atom optics experiments that each serve to measure atom-surface interactions near nanofabricated gratings are presented here. In these experiments atoms in a beam travel within 25 nm of a material grating bar, and the analysis incorporates phase shifts for the atomic de Broglie waves due to interactions betwen Na atoms and silicon nitride surfaces. One atom diffraction experiment determines the van der Waals coeficient C 3 = 2.7 ± 0.8 meV nm 3, and one atom interferometer experiment determines C 3 = 4 ± 1 meV nm 3. The results of all four experiments are consistent with the Lifshitz prediction that is explicitly calculated here for Nasilicon nitride to be C 3 = 3.25 meV nm 3. The four atom optics experiments and review of van der Waals theory are complemented by similar experiments using electron beams and analysis of image-charge effects.

Original languageEnglish (US)
Pages (from-to)48-55
Number of pages8
JournalJournal of Physics: Conference Series
Volume19
Issue number1
DOIs
StatePublished - Jan 1 2005

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phase shift
atom optics
atoms
nitrides
gratings
silicon nitrides
surface reactions
travel
interferometers
electron beams
predictions
diffraction
interactions

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

De Broglie wave phase shifts induced by surfaces closer than 25 nm. / Cronin, Alexander D; Perreault, John D.

In: Journal of Physics: Conference Series, Vol. 19, No. 1, 01.01.2005, p. 48-55.

Research output: Contribution to journalArticle

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