ISSN:
1089-7623
Source:
AIP Digital Archive
Topics:
Physics
,
Electrical Engineering, Measurement and Control Technology
Notes:
The homogeneity of the radio frequency (rf) axial magnetic field inside a solenoid composed of a set of current-carrying coils can be improved by imposing appropriate current densities in the various loops that constitute the structure. In the case of a hollow cylinder made from a single sheet of copper foil, the rf field so generated can also attain a similar degree of homogeneity without current compensation provided the copper foil is five to six times thicker than the skin depth and the cylinder's form factor (diameter/length) is of the order or less than 0.5. Numerical calculations based on some basic equations allow us to predict the rf field pattern of a cylinder of given dimensions. Experimental results obtained from a 32 MHz transmission line resonator show good agreement between theory and practice. The filling factor of this type of cylinder can also be evaluated from these calculations. © 1999 American Institute of Physics.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.1149722
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