Multipole shimming of permanent magnets using harmonic corrector rings

被引：33

作者：

Jachmann, R. C. ^{[1
]}

Trease, D. R.

Bouchard, L. -S.

Sakellariou, D.

Martin, R. W.

Schlueter, R. D.

Budinger, T. F.

Pines, A.

机构：

[1] Lawrence Berkeley Natl Lab, Div Sci Mat, Berkeley, CA 94720 USA

[2] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA

[3] CEA Saclay, Lab Struct & Dynam Resonance Magnet, Comis Nacl Energia Atom, Serv Chim Mol, F-91191 Gif Sur Yvette, France

[4] Univ Calif Irvine, Dept Chem, Irvine, CA 92697 USA

[5] Lawrence Berkeley Natl Lab, Div Engn, Berkeley, CA 94720 USA

[6] Lawrence Berkeley Natl Lab, Div Life Sci, Berkeley, CA 94720 USA

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 2007年 / 78卷 / 03期

关键词：

D O I：

10.1063/1.2713438

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Shimming systems are required to provide sufficient field homogeneity for high resolution nuclear magnetic resonance (NMR). In certain specialized applications, such as rotating-field NMR and mobile ex situ NMR, permanent magnet-based shimming systems can provide considerable advantages. We present a simple two-dimensional shimming method based on harmonic corrector rings which can provide arbitrary multipole order shimming corrections. Results demonstrate, for example, that quadrupolar order shimming improves the linewidth by up to an order of magnitude. An additional order of magnitude reduction is in principle achievable by utilizing this shimming method for z-gradient correction and higher order xy gradients. (c) 2007 American Institute of Physics.

引用

页数：7

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