✍ Scribed by R. Blinc; G. Lahajnar; I. Zupanc̆ic̆; H. Gränicher
No coin nor oath required. For personal study only.
The correlation time for proton motion in pure ice has been directly determined by measuring the frequency dependence of the rotating frame proton spin-lattice relaxation time Tip. The results show that the motion which determines proton spin-lattice relaxation is indeed by an order of magnitude faster than the one determining dielectric relasation and seems to be describable as a Schottky defect diffusion of X20 molecules.
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The present paper reports the achievement of the rotating-frame analog of spin-locking and its application to the precise measurements of the spin-lattice relaxation time T(1DR) in the doubly rotating frame. After the magnetization is aligned along the resonant RF field H(1), a pulse sequence of a l
Proton 7-1~ relation times in two sampks of methaemogIobiin with different 'sifter wntents showed t&t a process occurs vrith a correhtion time of the order le sat 240 K-This is probably an exchange of moIecufes between bound and free vater. In a previous paper [I] we reported the temperature depend
Ice Ih single crystal spin-lattice rckwation was mcasurcd in the rotating frame from -1.G to -23.3oC with spin-locking iields between 3 and 24 G. A rckaxation minimum and the relaxation rate anisotropy were observed. The results are discussed in terms of the Slichter-Ailion relaxation theory. For he