Abstract
In the chapter on hardware first the commercially available micro-imaging system and low-field system employed in the applications are presented. The latter is equipped with a one-axis bipolar gradient system. Properties of common permanent-magnet materials are compiled. Specifically designed parts described in some detail include an actively shielded gradient system for the transverse field geometry encountered in permanent-magnet systems, an inside-out setup, as well as a simple, compact, and efficient Halbach magnet. A common probe-matching network is analyzed in an intuitive representation used in electrical engineering and applied to a simple solenoid operating at 10 MHz. The chapter is concluded by the description of a flow loop used for rheological and online measurements.
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Notes
- 1.
A network analyzer capable of measuring the S 11 parameter including phase is sufficient. The impedance of the device under test is conveniently represented in a Smith chart. A cable must be used to connect the analyzer to the receiving element. Its influence on the measured impedance can be corrected automatically if the analyzer has an “extended port” option.
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Hardy, E.H. (2012). Hardware. In: NMR Methods for the Investigation of Structure and Transport. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-21628-2_3
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