Transverse deuteron relaxation time

Fig. 28.1. (a) Longitudinal and transverse Tj relaxation times for water as a function of filling ratio (with permission), (b) Longitudinal relaxation rate of deuterons as a function of pore radius for nitrobenzene-d, at 300 K . 

Fig. 7. Theoretical line shapes resulting from an interchange between two NMR frequencies

Fig. 45a, b. Frequency dependence of the deuteron spin-lattice relaxation time of perdeuterated PEG confined in 10-nm pores of solid PHEMA at 80 °C (a) and in bulk melts (b) [95, 185]. The dispersion of the confined polymers verifies the law Ti (X M° ft)° at high frequencies as predicted for limit (II)de of the tube/reptation model (see Table 1). The low-frequency plateau observed with the confined polymers indicates that the correlation function implies components decaying more slowly than the magnetization relaxation curves, so that the Bloch/Wangsness/Redfield relaxation theory [2] is no longer valid in this regime. The plateau value corresponds to the transverse relaxation time, T2, for deuterons extrapolated from the high-field value measured at 9.4 T... 

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