Quantum reflection: Focusing of hydrogen atoms with a concave mirror

Journal Article · Mon Oct 16 00:00:00 EDT 1989 · Physical Review Letters; (USA)

DOI:https://doi.org/10.1103/PhysRevLett.63.1689· OSTI ID:5350813

Berkhout, J J; Luiten, O J; Setija, I D; Hijmans, T W; Mizusaki, T; Walraven, J T.M. ^[1]

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1. Natuurkundig Laboratorium, Universiteit van Amsterdam, Valckenierstraat 65/67, 1018 XE Amsterdam, The Netherlands (NL) Van der Waals Laboratorium, Universiteit van Amsterdam, Valckenierstraat 65/67, 1018 XE Amsterdam, The Netherlands (NL)

We use a concave spherical mirror to focus at 18-mm-diam beam of H atoms down to 0.5 mm. The mirror consists of a fused-quartz substrate polished to optical precision and coated with a liquid-{sup 4}He film to obtain high reflectivity. The temperature dependence of the focused beam intensity enables us to study the influence of the dynamic surface roughness on the reflection of the H atoms. Both zero-point fluctuations and thermal excitations turn out to be of importance. A monolayer of {sup 3}He does not significantly affect the results.

• OSTI ID: 5350813
• Journal Information: Physical Review Letters; (USA), Vol. 63:16; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
HELIUM 4
REFLECTIVITY
HYDROGEN
FOCUSING
MIRRORS
QUARTZ
ATOMIC BEAMS
COATINGS
FLUCTUATIONS
QUANTUM MECHANICS
ROUGHNESS
SPHERICAL CONFIGURATION
SPIN ORIENTATION
SUBSTRATES
SURFACE PROPERTIES
TEMPERATURE DEPENDENCE
THIN FILMS
ULTRALOW TEMPERATURE
BEAMS
CHALCOGENIDES
CONFIGURATION
ELEMENTS
EVEN-EVEN NUCLEI
FILMS
HELIUM ISOTOPES
ISOTOPES
LIGHT NUCLEI
MECHANICS
MINERALS
NONMETALS
NUCLEI
OPTICAL PROPERTIES
ORIENTATION
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SILICON COMPOUNDS
SILICON OXIDES
STABLE ISOTOPES
VARIATIONS
656003* - Condensed Matter Physics- Interactions between Beams & Condensed Matter- (1987-)