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X-ray and neutron scattering from amorphous diamondlike carbon and hydrocarbon films

Thesis/Dissertation:

Abstract

In this report amorphous, diamondlike, carbon and hydrocarbon films are investigated by two different methods, namely, X-ray scattering and a combination of X-ray and neutron reflectivity. As specular reflectivity probes the scattering length density profile of a sample perpendicular to its surface, the combination of X-ray and neutron reflectivity reveals the nuclei density of both carbon and hydrogen separately. This allows to calculate the concentration of hydrogen in the films, which varies in the presented experiments between 0 and 36 atomic %. This method is a new and nondestructive technique to determine the concentration of hydrogen within an error of about {+-}1 at. % in samples with sharp interfaces. It is well suited for thin diamondlike carbon films. X-ray scattering is used to obtain structural information on the atomic scale, especially the average carbon-carbon distance and the average coordination number of the carbon atoms. As grazing incidence diffraction experiments were not successful, free-standing films are used for the scattering experiments with synchrotron light. However, the scattered intensity for large scattering vectors is, in spite of the intense primary beam, very weak, and therefore the accuracy of the obtained structural parameter is not sufficient to prove the diamondlike properties also on  More>>
Authors:
Publication Date:
Oct 01, 1994
Product Type:
Thesis/Dissertation
Report Number:
RISO-R-748(EN)
Reference Number:
SCA: 665100; 360606; PA: AIX-26:018951; EDB-95:032933; SN: 95001330473
Resource Relation:
Other Information: TH: Thesis (ph.d.).; PBD: Oct 1994
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 36 MATERIALS SCIENCE; CARBON; AMORPHOUS STATE; FILMS; SURFACE PROPERTIES; HYDROGEN; CONCENTRATION RATIO; CHEMICAL VAPOR DEPOSITION; MODIFICATIONS; NEUTRON DIFFRACTION; REFLECTIVITY; SYNCHROTRON RADIATION; X-RAY DIFFRACTION; 665100; 360606; NUCLEAR TECHNIQUES IN CONDENSED MATTER PHYSICS; PHYSICAL PROPERTIES
OSTI ID:
10113826
Research Organizations:
Risoe National Lab., Roskilde (Denmark). Solid State Physics Dept.
Country of Origin:
Denmark
Language:
English
Other Identifying Numbers:
Other: ON: DE95616726; ISBN 87-550-1977-3; TRN: DK9400189018951
Availability:
OSTI; NTIS; INIS
Submitting Site:
DKN
Size:
100 p.
Announcement Date:
Jun 30, 2005

Thesis/Dissertation:

Citation Formats

Findeisen, E. X-ray and neutron scattering from amorphous diamondlike carbon and hydrocarbon films. Denmark: N. p., 1994. Web.
Findeisen, E. X-ray and neutron scattering from amorphous diamondlike carbon and hydrocarbon films. Denmark.
Findeisen, E. 1994. "X-ray and neutron scattering from amorphous diamondlike carbon and hydrocarbon films." Denmark.
@misc{etde_10113826,
title = {X-ray and neutron scattering from amorphous diamondlike carbon and hydrocarbon films}
author = {Findeisen, E}
abstractNote = {In this report amorphous, diamondlike, carbon and hydrocarbon films are investigated by two different methods, namely, X-ray scattering and a combination of X-ray and neutron reflectivity. As specular reflectivity probes the scattering length density profile of a sample perpendicular to its surface, the combination of X-ray and neutron reflectivity reveals the nuclei density of both carbon and hydrogen separately. This allows to calculate the concentration of hydrogen in the films, which varies in the presented experiments between 0 and 36 atomic %. This method is a new and nondestructive technique to determine the concentration of hydrogen within an error of about {+-}1 at. % in samples with sharp interfaces. It is well suited for thin diamondlike carbon films. X-ray scattering is used to obtain structural information on the atomic scale, especially the average carbon-carbon distance and the average coordination number of the carbon atoms. As grazing incidence diffraction experiments were not successful, free-standing films are used for the scattering experiments with synchrotron light. However, the scattered intensity for large scattering vectors is, in spite of the intense primary beam, very weak, and therefore the accuracy of the obtained structural parameter is not sufficient to prove the diamondlike properties also on the atomic scale. (au) (10 tabs., 76 ills., 102 refs.).}
place = {Denmark}
year = {1994}
month = {Oct}
}