谱-空间2D ESR成像

波谱学杂志 ›› 2005, Vol. 22 ›› Issue (1): 27-33.

谱-空间2D ESR成像

吉林大学 1.测试科学实验中心；2.原子与分子物理所；3.理化所，吉林长春 130023

收稿日期:2004-07-05 修回日期:2004-09-13 出版日期:2005-03-05 发布日期:2005-03-05
基金资助:
国家自然科学基金资助项目（29935060）.

Spectral-Spatial Two-Dimensional ESR Imaging

Jilin University, Changchun, 130023, China

Received:2004-07-05 Revised:2004-09-13 Online:2005-03-05 Published:2005-03-05
Supported by:
国家自然科学基金资助项目（29935060）.

摘要/Abstract

摘要：

在Bruker ER 200D ESR 谱仪上安装一套自制的谱-空间2D ESR成像系统，这套系统由一对梯度场线圈、电源、微机及图像重建程序组成. 用滤波反投影图像重建方法，实现了两种自由基样品的谱-空间2D ESR成像，由2D 图像得到样品中自由基的自旋密度空间分布及相应的波谱参数. 讨论了成像参数与图像精度的关系.

关键词: ESR, 谱-空间成像, 自由基, 自旋密度, 梯度场

Abstract:

A spectral-spatial 2D ESR imaging system was installed on a Bruker ER 200 D ESR spectrometer. It consists of a pair of field gradient coils, power supplies and a computer system used for image reconstruction. Spectral-spatial 2D ESR imaging was performed on several free radical samples using the filtered back-projection method. The spatial distribution of the spin densities of the free radicals and the corresponding spectral parameters were acquired simultaneously from the 2D images. The relationship between the imaging parameters and the accuracy of the images was discussed.

Key words: ESR, spectral-spatial imaging, free radical, spin density, field gradient

中图分类号:

O482.53

郑莹光, 许静, 董凤霞, 沈尔中, 徐玉书. 谱-空间2D ESR成像[J]. 波谱学杂志, 2005, 22(1): 27-33.

ZHENG Ying-Guang, XU Jing, DONG Feng-Xia, SHEN Er-Zhong, XU Yu-Shu. Spectral-Spatial Two-Dimensional ESR Imaging[J]. Chinese Journal of Magnetic Resonance, 2005, 22(1): 27-33.

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