Prominent out-of-plane diffraction in helium scattering from a methyl-terminated Si(111) surface

2019 ◽  
Vol 21 (28) ◽  
pp. 15879-15887
Author(s):  
Marcos del Cueto ◽  
Alberto S. Muzas ◽  
Terry J. Frankcombe ◽  
Fernando Martín ◽  
Cristina Díaz
Keyword(s):  
Helium Atom ◽  
Helium Atom Scattering ◽  
Atom Scattering ◽  
Out Of Plane ◽  
Helium Scattering ◽  
Plane Diffraction

Out-of-plane diffraction widely surpasses in-plane diffraction in helium atom scattering from methyl-terminated Si(111) surfaces.

STUDIES OF THE ADSORPTION OF CYANOGEN (C2N2) ON Cu(001) USING HELIUM ATOM SCATTERING

2007 ◽  
Vol 14 (05) ◽  
pp. 863-872 ◽  
Author(s):  
I. G. SHUTTLEWORTH
Keyword(s):  
Domain Structure ◽  
Helium Atom ◽  
Ordered Structure ◽  
Strain Relief ◽  
Helium Atom Scattering ◽  
Disordered Structure ◽  
Atom Scattering ◽  
Disordered Phase ◽  
Plane Diffraction ◽  
Kontorova Model

The adsorption of cyanogen ( C 2 N 2) on Cu (001) has been investigated using helium atom scattering. Adsorption at 263 K produces a two domain structure with periodicity c(10 × 6) and symmetry c2 mm. The principle axes of the two domains in the c(10 × 6) pattern lie at right angles to one another. Adsorption at lower temperatures (163 K) produces a disordered structure with no observable diffraction features other than the specular. Annealing the disordered phase to 263 K does not produce an ordered structure. Cooling the ordered structure from 263 K to 163 K produces an enhancement of the diffraction features consistent with the Debye–Waller effect but no disruption of the c(10 × 6) periodicity. Annealing the ordered structure shows that the structure remains stable at temperatures up to 373 K. Analysis of the in-plane diffraction features suggests a reconstruction of the Cu (001) substrate consistent with the 2D Frenkel–Kontorova model for overlayer strain relief.

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

Surface vibrations of large water clusters by helium atom scattering

2000 ◽  
Vol 112 (24) ◽  
pp. 11038-11047 ◽  
Author(s):  
Jesko Brudermann ◽  
Petra Lohbrandt ◽  
Udo Buck ◽  
Victoria Buch
Keyword(s):  
Helium Atom ◽  
Water Clusters ◽  
Helium Atom Scattering ◽  
Atom Scattering ◽  
Surface Vibrations ◽  
Large Water
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