COIL DESIGN WITH LITZE WIRE FOR MAGNETIC PARTICLE SPECTROMETRY
Przemysław Wróblewski
P.Wroblewski@ire.pw.edu.plWarsaw University of Technology, Institute of Radioelectronics and Multimedia Technology, Department of Nuclear and Medical Electronics (Poland)
Waldemar Smolik
Warsaw University of Technology, Institute of Radioelectronics and Multimedia Technology, Department of Nuclear and Medical Electronics (Poland)
Abstract
The design of an excitation coil for magnetic particles spectrometer (MPS) was described. It was assumed that the spectrometer should measure the spectra of particles of diameter in the range 10-100 nm. To measure the amplitude and phase angle spectra of magnetic nanoparticles it is required to generate sinusoidal alternating spatially homogeneous magnetic field of magnitude of 20 mT. The work volume of the designed spectrometer was 20´20´20 mm allowing measurement of small samples. The estimation of magnetic properties of magnetic nanoparticles is crucial in Magnetic Particles Imaging. In this paper we described the excitation coil design which minimizes power losses on the coil related to heat emission. The resonance circuit operating on 20 kHz frequency was applied. Optimal litze wire configuration was proposed to negate skin and proximity effects. The numeric simulations for the optimal and commercially available suboptimal litze wire configurations were performed. The comparison of the results was shown and discussed.
Keywords:
magnetic field, nanoparticles, coils, spectroscopyReferences
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Authors
Przemysław WróblewskiP.Wroblewski@ire.pw.edu.pl
Warsaw University of Technology, Institute of Radioelectronics and Multimedia Technology, Department of Nuclear and Medical Electronics Poland
Authors
Waldemar SmolikWarsaw University of Technology, Institute of Radioelectronics and Multimedia Technology, Department of Nuclear and Medical Electronics Poland
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