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Persistent URL http://purl.org/net/epubs/work/1132
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Record Id 1132
Title Neutron Compton scattering from amorphous hydrogenated carbon
Abstract Neutron Compton scattering (NCS) measurements have been used to determine the kinetic energies of atoms in samples of amorphous hydrogenated carbon (a-C:H), graphite and diamond at momentum transfers between 40 and 300 AA-1. We find that the kinetic energy of individual carbon atoms is the same within statistical error in a-C:H and graphite but significantly higher in diamond. The kinetic energy of the hydrogen in a-C:H is lower than expected from previous spectroscopic measurements and we infer that the sample contained molecular hydrogen. Observed deviations from the impulse approximation are consistent with theoretical calculations. We discuss future prospects for NCS measurements on non-crystalline materials.
Organisation ISIS , ISIS-EVS , SERC
Keywords Physics , Materials , ISIS 1994
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Language English (EN)
Type Details URI(s) Local file(s) Year
Journal Article J Phys-Condens Mat 6 (1994): 641. doi:10.1088/0953-8984/6/3/006 1994
Report RAL Technical Reports RAL-93-052. 1993. RAL-TR-1993-052.pdf 1993