Analyses of the spin-lattice relaxation
time ([T.sub.1]) and the spin-spin relaxation time ([T.sub.2]) at different concentrations of the molecule (Figure 1(d)) suggest a [T.sub.1] of ~450 ms and [T.sub.2]s, which show significant shortening with increasing concentration.
differential scanning calorimetry (DSC) and tensile testing, and an unconventional technique, relaxometry for determining proton spin-lattice relaxation
time ([T.sub.1] H).
Therefore, to investigate how the Ca concentration in the [Cu.sub.5][Gd.sub.1-x][Ca.sub.x] system (or rather [H.sub.2][Gd.sub.1-x][Ca.sub.x]) affects the interaction of protons with the host metallic lattice and interpret Figure 8(b) through proton diffusivity and hopping activation energies, we measured the proton spin-lattice relaxation
by means of [sup.1]H NMR at proton resonance frequency of 500 MHz, corresponding to a magnetic field of 11.75 Tesla.
At higher temperatures, fast spin-lattice relaxation
of [Mn.sup.2+] ions prevents the observation of ESE.
The quality of the MRI images depends on three NMR main parameters (the proton spin density, the nuclear spin-lattice relaxation
time T1, and the spin-spin relaxation time T2), and the contrast agents (CAs), based on the different distribution of nuclear-spin density along the body, are able to improve the image contrast by increasing (locally) the nuclear relaxation rates .
The correlations between amplitudes and microwave power characterize spin-lattice relaxation
Proton spin-lattice relaxation
times of skeletal muscles on magnetic resonance imaging.
NMR relaxation parameters, especially the nonselective ([R.sup.NS.sub.1]) and selective ([R.sup.SE.sub.1]) spin-lattice relaxation
rates of water protons, are useful for investigating the solvent dynamics at the macromolecule-solvent interfaces as well as the perturbation effects caused by the water-macromolecule interactions on the solvent dynamical properties [13-25].
[T.sub.1] relates to spin-lattice relaxation
as the paramagnetic material interacts with the lattice.
He covers fundamentals of the theory of hindered molecular motion; solving the stochastic problem for the extended angular jump model, and autocorrelation functions adapted to it; and applications in dielectric and optical spectroscopy, nuclear magnetic resonance spin-lattice relaxation
, and incoherent neutron scattering.
The third volume covers spintronics (spin electronics) and nanoelectronics, with chapters that specifically address spin-lattice relaxation
in magnetic semiconductor nanostructures, material and device issues of high-electron mobility transistors, and room-temperature operating silicon single-electron devices, among other topics.
however, the spin-lattice relaxation
times of [alpha], [beta], [gamma]