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Hydrogen and muonium behaviour in diamond

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dc.contributor.advisor Machi IZ, Dr en
dc.contributor.advisor Connell SH, Dr en
dc.contributor.author Sithole MJ en
dc.date.accessioned 2016-09-22T11:54:33Z
dc.date.available 2016-09-22T11:54:33Z
dc.date.created 2002 en
dc.date.submitted 2005 en
dc.identifier.uri http://hdl.handle.net/20.500.11892/142057
dc.description.abstract This work is aimed at the understanding of the dynamical behavior of hydrogen in diamond. The investigation was carried out using Transverse Field muon Spin Rotation (TF-&mu;.SR) and the Longitudinal Field muon Spin Relaxation (LF-&mu;SR) techniques. The chemical analogy between hydrogen (p<sup>t</sup>e<sup>-</sup>) and muonium (&mu;<sup>+</sup>e<sup>-</sup>) enabled the study of the indirect dynamical behavior of hydrogen in diamond.<br><br> The TF-&mu;SR and LF-&mu;SR measurements were carried out in an isotopically pure <sup>13</sup>C diamond in the temperature ranges 11 mK - 320 K and 10 K - 400 K, respectively. In the TF-&mu;SR results, the Prompt Absolute Fraction (PAF) of both diamagnetic (&mu;<sub>D</sub><sup>+</sup>) and the paramagnetic (MU<SUB>T</SUB>) states are temperature independent. The spin relaxation rate (&lambda;<sub>&mu;</sub>+<sub>D</sub> for the &mu;<sub>D</sub><sup>+</sup> state is non-zero and temperature independent, while that (&lambda;<sub>MUT</sub>) of the MU<SUB>T</SUB> state is non-zero and temperature dependent. The behavior of &lambda;<sub>&mu;</sub><sub>D</sub>+ indicates that the &mu;<sub>D</sub><sup>+</sup> is immobile, while that of MU<sub>T</sub> indicates the mobility in diamond. The LF-&mu;SR results provide hop rate and associated nuclear hyperfine interaction parameters of the Mu<sub>T</sub> state in diamond. en
dc.language English en
dc.subject Physics en
dc.title Hydrogen and muonium behaviour in diamond en
dc.type Masters degree en
dc.description.degree MSc en

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