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Effects of damage on diffusion of implanted helium in diamond measured by nuclear elastic scattering

Orwa, J.O., Jamieson, D.N., Nugent, K.W., Prawer, S. and Kalish, R. 1997, Effects of damage on diffusion of implanted helium in diamond measured by nuclear elastic scattering, Nuclear instruments and methods in physics sesearch B, vol. 124, no. 4, pp. 515-518.

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Title Effects of damage on diffusion of implanted helium in diamond measured by nuclear elastic scattering
Author(s) Orwa, J.O.ORCID iD for Orwa, J.O. orcid.org/0000-0001-6041-6751
Jamieson, D.N.
Nugent, K.W.
Prawer, S.
Kalish, R.
Journal name Nuclear instruments and methods in physics sesearch B
Volume number 124
Issue number 4
Start page 515
End page 518
Total pages 4
Publisher Elsevier
Place of publication Amsterdam, The Netherlands
Publication date 1997
ISSN 0168-583X
Summary A diamond slab was implanted to doses of 1 × 1017, 2.5 × 1017 and 5 × 1017 cm-2 with 600 keV and 1 MeV 4He+ ions. We present results which show that it is possible to detect the implanted helium by H+ Backscattering Spectrometry (BS). A comparison of the Raman spectra and BS spectra of the samples showed that, in cases where the damage introduced by implantation resulted in graphitization and cracking, the implanted helium escaped. When the diamond matrix did not graphitize or crack, no noticeable diffusion occurred and the implant was confined and subjected to pressures of up to 14 GPa. We attribute most of the loss of helium to diffusion through the graphitized region and eventual escape through the cracks.
Language eng
Field of Research 020499 Condensed Matter Physics not elsewhere classified
Socio Economic Objective 970102 Expanding Knowledge in the Physical Sciences
HERDC Research category C1.1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©1997, Elsevier
Persistent URL http://hdl.handle.net/10536/DRO/DU:30091895

Document type: Journal Article
Collection: School of Engineering
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