超快拉普拉斯 NMR 中的非线性采样。
Nonlinear sampling in ultrafast Laplace NMR.
机构信息
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.
出版信息
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。
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