Effect of crystallite size of powder on NQR relaxation time
The experimental study of the influence of the effect size of the crystallites in the powders on the form and the width of the 35Cl NQR lines in the potassium chlorate, as well as the spin-spin and spin-lattice relaxation is described. It is established that the width of the NQR lines in the direct method of detection is increased, and the relaxation times are reduced with a decrease in the average crystallite size, which is due, mainly, due the process of spin-spin ...
Distribution of NQR relaxation times in the rotating frame of reference in micro-sized crystallites
This article presents the results of an experimental study into the effect of powder crystallite size on spin-lattice relaxation times in a rotating frame for 35Cl NQR in potassium chlorate, as well as the nutation interferograms. To obtain the distribution of relaxation times, a multi-exponential decay inversion of the longitudinal component of the nuclear magnetization ...
Mathematical Model of Intramolecular Tautomeric Transformation and the Processes of a Relaxation of the Proton
... proton as a result of its interaction with the surrounding medium simulated by the quantized field of radiation. Effective adiabatic potentials of the proton are approximated by the parabolas of various curvatures. The estimation for the vibrational relaxation time and the formula for the constant of tautomeric equilibrium.
1.
Грибов Л. А., Дементьев В. А., Завалий М. В. и др.
Компьютерное моделирование изомеризации сложных ...
The method of multipulse registration of nuclear magnetic resonance signal in unhomogeneous magnetic field
This paper presents the results of a series of experiments whose purpose was to investigate the possible use of composite pulses to improve the homogeneity of the magnetic field and study the possibility of identifying compounds based on the relaxation characteristics of the NMR signals.
1. Хаусен К. Х., Кальбитцер Х. Р. ЯМР в медицине и биологии. Киев, 1993.
2. Эрнст Р., Боденхаузен Дж., Вокаун А. ЯМР в одном ...
Carbon isotope substitution and quasi-intersection of energy levels in diamond
... NV–-center at the quasi-intersection level are considered as a possible cause of changes in the photoluminescence intensity of NV–-centers.
Ivanov A. I., Kulagina A. A., Shpilevoy A. A.
crystal diamond, quasi-intersection of energy levels, relaxation, Zeeman splitting, hyperpolarization
104-113