Bazı Kimyasal Sıvıların Durulma Sürelerinin İki Farklı Zaman Boyutlu NMR Cihazı ile Karşılaştırılması

Year 2025, Volume: 25 Issue: 2, 298 - 304

Cengiz Okay

Abstract

Zaman boyutlu nükleer manyetik rezonansında (TD-NMR) kullanılan spin-örgü (T1) ve spin-spin (T2) durulma süresi ölçümleri, onu farklı sıvı maddelerin ve bunların kombinasyonlarının moleküler dinamikleri hakkında bilgi edinmek için değerli bir teknoloji haline getirir. Bu araştırmada bazı sıvı bileşiklerin durulma sürelerini belirlemek için iki farklı proton NMR cihazı: yüksek çözünürlüklü Magritek Spinsol NMR (42MHz-1T) ve Bruker Minispec zaman boyutlu NMR (TD-NMR) (20MHz-0,5T) kullanıldı. Her iki cihaz tarafından elde edilen T1 ve T2 değerlerinin birbiriyle aynı eğilimde olduğu ve T1 durulma süresinin T2 değerinden daha uzun olduğu görülmüştür.
Yüksek çözünürlüklü Magritek Spinsolve NMR cihazının, manyetik alan gradyantı (homojenlik) değerleri açısından Bruker Minispec cihazından daha iyi performans gösterdiği, ölçüm sıcaklıklarının ve larmor frekans değerlerinin T1 ve T2 durulma süresine etkisi detaylı bir şekilde araştırılmıştır.

Keywords

Zaman Boyutlu Nükleer Manyetik Rezonans (TD-NMR), Spin-Spin, Spin-Örgü, Durulma Süreleri

Comparison of The Relaxation Times of Some Chemical Liquids Using Two Different Time-Dimensional NMR Devices

Abstract

The spin lattice (T1) and spin-spin (T2) relaxation time measurements used in time-domain nuclear magnetic resonance (TD-NMR) make it a valuable technology for learning about the molecular dynamics of different liquid substances and their combinations. In this investigation two distinct proton NMR instruments were utilized to determine the relaxation times of several liquid compounds: the high-resolution Magritek Spinsolve NMR (42MHz-1T) and the Bruker Minispec time-domain NMR (20MHz-0.5T). It has been seen that T1 and T2 values obtained by both devices have the same tendency and the T1 relaxation time is longer than the T2 value. It's been investigated that the high-resolution Magritek Spinsolve NMR device outperforms the Bruker Minispec device in terms of magnetic field gradient (inhomogeneity) values, the effects of measurement temperatures and larmor frequency values on T1 and T2 relaxation times have been investigated in detail.

Keywords

Time-Domain Nuclear Magnetic Resonance (TD-NMR), spin-spin, spin-lattice, Relaxation Time.

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