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采用随机采样法记录二维章动核磁共振谱

Recording 2-D Nutation NQR Spectra by Random Sampling Method.

作者信息

Glotova Olga, Sinyavsky Nikolaj, Jadzyn Maciej, Ostafin Michal, Nogaj Boleslaw

出版信息

Appl Magn Reson. 2010 Oct;39(3):205-214. doi: 10.1007/s00723-010-0148-6. Epub 2010 Jul 3.

DOI:10.1007/s00723-010-0148-6
PMID:20949121
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC2947006/
Abstract

The method of random sampling was introduced for the first time in the nutation nuclear quadrupole resonance (NQR) spectroscopy where the nutation spectra show characteristic singularities in the form of shoulders. The analytic formulae for complex two-dimensional (2-D) nutation NQR spectra (I = 3/2) were obtained and the condition for resolving the spectral singularities for small values of an asymmetry parameter η was determined. Our results show that the method of random sampling of a nutation interferogram allows significant reduction of time required to perform a 2-D nutation experiment and does not worsen the spectral resolution.

摘要

随机抽样方法首次被引入章动核四极共振（NQR）光谱学中，在该光谱学中章动光谱呈现出肩部形式的特征奇点。得到了复二维（2-D）章动NQR光谱（I = 3/2）的解析公式，并确定了对于小不对称参数η值分辨光谱奇点的条件。我们的结果表明，章动干涉图的随机抽样方法能够显著减少进行二维章动实验所需的时间，并且不会降低光谱分辨率。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/51fd/2947006/650ee1278877/723_2010_148_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/51fd/2947006/981abb4b9d5f/723_2010_148_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/51fd/2947006/2bf26c731243/723_2010_148_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/51fd/2947006/03250f48b0f9/723_2010_148_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/51fd/2947006/650ee1278877/723_2010_148_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/51fd/2947006/981abb4b9d5f/723_2010_148_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/51fd/2947006/2bf26c731243/723_2010_148_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/51fd/2947006/03250f48b0f9/723_2010_148_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/51fd/2947006/650ee1278877/723_2010_148_Fig4_HTML.jpg

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本文引用的文献

1
Lineshapes and artifacts in Multidimensional Fourier Transform of arbitrary sampled NMR data sets.任意采样核磁共振数据集多维傅里叶变换中的线形和伪影。
J Magn Reson. 2007 Oct;188(2):344-56. doi: 10.1016/j.jmr.2007.08.005. Epub 2007 Aug 15.
2
Determination of the electric field gradient asymmetry from 2D nutation NQR spectra of 75As nuclei in oriented samples of As2Se3 semiconductor.从As2Se3半导体取向样品中75As核的二维章动NQR谱确定电场梯度不对称性。
Solid State Nucl Magn Reson. 2007 May;31(3):119-23. doi: 10.1016/j.ssnmr.2007.03.001. Epub 2007 Apr 1.
3
Random sampling of evolution time space and Fourier transform processing.
进化时间空间的随机抽样和傅里叶变换处理。
J Biomol NMR. 2006 Nov;36(3):157-68. doi: 10.1007/s10858-006-9077-y. Epub 2006 Sep 21.