Особливості визначення Т2 на імпульсному ЯМР

Abstract

Проведено дослідження обробки даних сигналу імпульсного ЯМР із метою попередньої оцінки якості виміру часу спін-спінової релаксації Т2. Запропоновано підхід до оцінки якості проведених вимірювань шляхом обчислення додаткового коефіцієнта в залежності амплітуди сигналу від часу, який дозволить оцінити точність результатів дослідження.

The relevance of this work is related to the problems of data processing and improvement of the accuracy of the experiment, these problems’ solution requires new methods of processing statistics. Trends of modern science, its orientation to new technologies require a differentiated approach to conducting experiments and training. Using the latest methods of data processing are intended to provide clear and sufficiently accurate results that can be used in the future. In this regard, this article discusses the goals, objectives and requirements posed to the experimenter who works in modern science. This article presents one of the mathematical methods for improving accuracy of the data and comparative analysis of the described method with other popular methods of mathematical statistics. The authors studied data processing obtained by pulsed NMR for preliminary assessment of the quality of spin-spin relaxation time T2 measurements. They propose an approach for assessing quality of the measurements by calculating additional coefficient for signals amplitude depending on time. This coefficient will assess accuracy of the results of the study. As example, one of the calculations shows the consistency of the proposed method for data processing. All measurements are carried out in the body of Mathcad softwar, due to its convenience and high accuracy. The article results in some conclusions and recommendations regarding data processing. Thus an additional method that improves the measurement accuracy is obtained, but it’s worth remember that this method is not absolutely universal and has its own limitations.