NMR Research Unit, University of Oulu, P.O. Box 3000, 90014 Oulu, Finland.
NMR Research Unit, University of Oulu, P.O. Box 3000, 90014 Oulu, Finland.
J Magn Reson. 2019 Oct;307:106571. doi: 10.1016/j.jmr.2019.106571. Epub 2019 Aug 13.
Ultrafast Laplace NMR (UF-LNMR) reduces the experiment time of multidimensional relaxation and diffusion measurements to a fraction. Here, we demonstrate a method for nonlinear (in this case logarithmic) sampling of the indirect dimension in UF-LNMR measurements. The method is based on the use of frequency-swept pulses with the frequency nonlinearly increasing with time. This leads to an optimized detection of exponential experimental data and significantly improved resolution of LNMR parameters.
超快拉普拉斯核磁共振（UF-LNMR）将多维弛豫和扩散测量的实验时间缩短到了一小部分。在这里，我们展示了一种在 UF-LNMR 测量中对间接维度进行非线性（在此情况下为对数）采样的方法。该方法基于使用频率随时间非线性增加的频率扫描脉冲。这导致对指数实验数据的优化检测，并显著提高 LNMR 参数的分辨率。
