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-SR) and the Longitudinal Field muon Spin Relaxation (LF-SR)
techniques. The chemical analogy between hydrogen (p+e-) and muonium (u+e-)
enabled the study of the indirect dynamical behavior of hydrogen in diamond.
The TF-SR and LF-SR measurements were carried out in an isotopically pure 13C
diamond in the temperature ranges 11 mK - 320 K and 10 K - 400 K, respectively.
In the TF-SR results, the Prompt Absolute Fraction (PAF) of both diamagnetic
and the paramagnetic states are temperature independent. The spin
relaxation rate for the state is non-zero and temperature independent,
while that of the Mux state is non-zero and temperature dependent. The
behavior of indicates that the u+d is immobile, while that of MuT indicates the
mobility in diamond. The LF-SR results provide hop rate and associated nuclear
hyperfine interaction parameters of the Mut state in diamond. / Physics / M.Sc. (Physics)
| Identifer | oai:union.ndltd.org:netd.ac.za/oai:union.ndltd.org:unisa/oai:umkn-dsp01.int.unisa.ac.za:10500/2109 |
| Date | 31 March 2005 |
| Creators | Joseph, Sithole Makgamathe |
| Contributors | Machi, I.Z. (Dr.), Connell, S.H. (Dr.) |
| Source Sets | South African National ETD Portal |
| Language | English |
| Detected Language | English |
| Type | Dissertation |
| Format | 1 online resource (xii, 68 leaves) |
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