Reflection of hydrogen atoms from the surface of superfluid helium

Journal Article · Tue May 01 00:00:00 EDT 1990 · Physical Review, B: Condensed Matter; (USA)

DOI:https://doi.org/10.1103/PhysRevB.41.8886· OSTI ID:6849634

Tiesinga, E; Stoof, H T.C.; Verhaar, B J ^[1]

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1. Department of Physics, Eindhoven University of Technology, 5600 MB Eindhoven, The Netherlands (NL)

We propose a new method for studying the reflection of a hydrogen atom from a superfluid-helium film. Starting from the narrow width of the reflected angular distribution recently found experimentally, we tentatively extrapolate to the extreme limit of low ripplon wave numbers in which the adiabatic or degenerate-internal-states approximation becomes valid. We obtain simple closed expressions for single- and multiple-ripplon processes, which do not require the integration of a Schroedinger equation for their evaluation and do not depend on the specific form of the potential.

• OSTI ID: 6849634
• Journal Information: Physical Review, B: Condensed Matter; (USA), Vol. 41:13; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
HELIUM II
ATOM COLLISIONS
HYDROGEN
INELASTIC SCATTERING
ADIABATIC APPROXIMATION
ANGULAR DISTRIBUTION
FILMS
REFLECTION
SUPERFLUIDITY
SURFACE PROPERTIES
COLLISIONS
DISTRIBUTION
ELEMENTS
EVEN-EVEN NUCLEI
FLUIDS
HELIUM 4
HELIUM ISOTOPES
ISOTOPES
LIGHT NUCLEI
NONMETALS
NUCLEI
QUANTUM FLUIDS
SCATTERING
STABLE ISOTOPES
640450* - Fluid Physics- Superfluidity