scholarly journals Helium atom scattering from potassium tantalate/niobate(001) surfaces

2021 ◽  
Author(s):  
David H. Van Winkle ◽  
J. G. Skofronick ◽  
T. W. Trelenberg ◽  
S. A. Safron ◽  
F. A. Flaherty
Keyword(s):  
Surface Temperature ◽  
Helium Atom ◽  
Diffraction Intensity ◽  
Helium Atom Scattering ◽  
Potassium Tantalate ◽  
Helium Atoms ◽  
Potassium Tantalate Niobate ◽  
Atom Scattering

The specular diffraction intensity of helium atoms from KTa0.48Nb0.52O3 surfaces undergoes dramatic fluctuations as a function of surface temperature.

Helium Atom Scattering from Cyclopentane, Pyrrolidine and Tetrahydrofurane in Crossed Molecular Beams

1997 ◽  
Vol 52 (5) ◽  
pp. 425-431
Author(s):  
Christian Gebauer ◽  
Olaf Klein ◽  
Ralf Schmidt ◽  
Wolfhart Seidel
Keyword(s):  
High Resolution ◽  
Helium Atom ◽  
Cross Sections ◽  
Differential Cross ◽  
Molecular Beam ◽  
Molecular Beams ◽  
Geometric Transformation ◽  
Helium Atom Scattering ◽  
Helium Atoms ◽  
Atom Scattering

Abstract Scattering of helium atoms by cyclopentane, pyrrolidine and tetrahydrofurane molecules was ob-served in crossed molecular beam experiments. The intensity of scattered helium atoms, depending on the scattering angle, was measured with high resolution, and the damping of the diffraction oscillations of the differential cross sections was used to extract elastic anisotropic interaction potentials for these molecules. The evaluation included a geometric transformation concerning the puckered states of the envelope and the twisted conformation of the molecules. The potentials were found to be rather similar.

Surface structure of lithium-doped potassium tantalate using helium atom scattering

2013 ◽  
Vol 87 (8) ◽  
Author(s):  
Rifat Fatema ◽  
David H. Van Winkle ◽  
J. G. Skofronick ◽  
Sanford A. Safron ◽  
F. A. Flaherty ◽  
...  
Keyword(s):  
Surface Structure ◽  
Helium Atom ◽  
Helium Atom Scattering ◽  
Potassium Tantalate ◽  
Atom Scattering

Surface structure of niobium-doped potassium tantalate KTa1 −xNbxO3obtained from helium atom scattering studies

2010 ◽  
Vol 22 (30) ◽  
pp. 304009 ◽  
Author(s):  
T W Trelenberg ◽  
Rifat Fatema ◽  
Jaime A Li ◽  
E A Akhadov ◽  
David H Van Winkle ◽  
...  
Keyword(s):  
Surface Structure ◽  
Helium Atom ◽  
Helium Atom Scattering ◽  
Potassium Tantalate ◽  
Atom Scattering ◽  
Niobium Doped

Helium atom scattering from KTa0.7Nb0.3O3(001): Anomalous surface reflectivity with varying surface temperature and helium wave vector

2011 ◽  
Vol 84 (14) ◽  
Author(s):  
Rifat Fatema ◽  
T. W. Trelenberg ◽  
David H. Van Winkle ◽  
J. G. Skofronick ◽  
S. A. Safron ◽  
...  
Keyword(s):  
Surface Temperature ◽  
Helium Atom ◽  
Wave Vector ◽  
Helium Atom Scattering ◽  
Atom Scattering ◽  
Anomalous Surface ◽  
Surface Reflectivity

scholarly journals Inter-adsorbate forces and coherent scattering in helium spin-echo experiments

2021 ◽  
Author(s):  
David J. Ward ◽  
Arjun Raghavan ◽  
Anton Tamtögl ◽  
Andrew P. Jardine ◽  
Emanuel Bahn ◽  
...  
Keyword(s):  
Helium Atom ◽  
Short Range ◽  
Spin Echo ◽  
Coherent Scattering ◽  
Helium Atom Scattering ◽  
Atom Scattering

Using helium atom scattering to identify adsorbate interactions and separate the effects of long and short range forces.

Low energy helium atom scattering from HCl monolayers physisorbed on graphite

1989 ◽  
Vol 224 (1-3) ◽  
pp. A620
Author(s):  
G.Y. Liu ◽  
P. Rowntree ◽  
G. Scoles ◽  
J. Xu
Keyword(s):  
Helium Atom ◽  
Low Energy ◽  
Helium Atom Scattering ◽  
Atom Scattering

A helium atom scattering study of the structure and phonon dynamics of the ice surface

2000 ◽  
Vol 112 (24) ◽  
pp. 11011-11022 ◽  
Author(s):  
A. Glebov ◽  
A. P. Graham ◽  
A. Menzel ◽  
J. P. Toennies ◽  
P. Senet
Keyword(s):  
Helium Atom ◽  
Helium Atom Scattering ◽  
Atom Scattering ◽  
Ice Surface ◽  
Phonon Dynamics ◽  
Scattering Study

scholarly journals Study of energy transfer in helium atom scattering from surfaces

Vacuum ◽  
1999 ◽  
Vol 54 (1-4) ◽  
pp. 315-320 ◽  
Author(s):  
A. Šiber ◽  
B. Gumhalter ◽  
J.P. Toennies
Keyword(s):  
Energy Transfer ◽  
Helium Atom ◽  
Helium Atom Scattering ◽  
Atom Scattering
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