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Mutual inductance and magnetic force calculations for coaxial bitter disk coils (Pancakes)

Mutual inductance and magnetic force calculations for coaxial bitter disk coils (Pancakes)

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Recently Y. Ren and J.T. Conway calculated the mutual inductance and the magnetic force between an ordinary coil and a bitter coil or between two bitter coils. The bitter coil is the coil with inverse radial current density. In this study, the authors calculate the mutual inductance and the magnetic force between two disk coils (pancakes) with inverse radial current density. This coil configuration with proposed current density seems to be similar to bitter coils. Both calculations give the semi-analytical expressions either for mutual inductance or for the magnetic force. Also they derived the self-inductance for the disk coil with radial current density which is obtained in closed form. The results of this method are compared by those obtained by the modified filament method for the presented configuration.


    1. 1)
    2. 2)
      • 23. Conway, J.T.: ‘Non coaxial force and inductance calculations for bitter coils and coils with uniform radial current distributions’. Int. Conf. on Applied Superconductivity and Electromagnetic Devices (ASEMD) Sydney, Australia, December 2011, pp. 6164.
    3. 3)
      • 16. Akyel, C., Babic, S.I., Kincic, S., et al: ‘Magnetic force calculation of some circular coaxial coils in air’, J. Electromagn. Waves Appl., 2007, 21, (9), pp. 12731283.
    4. 4)
    5. 5)
    6. 6)
    7. 7)
      • 10. Babic, S.I., Akyel, C.: ‘An improvement in the calculation of the self-inductance of thin disk coil with air-core’, WSEAS Trans. Circuits Syst., 2004, 3, (8), pp. 16211626.
    8. 8)
      • 2. ‘MagnetLab, National High Magnetic Field Laboratory, Florida State University, Los Alamos National Laboratory, University of Florida’. Available at, accessed 15 December2015.
    9. 9)
    10. 10)
    11. 11)
    12. 12)
    13. 13)
    14. 14)
    15. 15)
      • 24. Abramowitz, M., Stegun, I.A.: ‘Handbook of mathematical functions’. National Bureau of Standards Applied Mathematics, Washington DC, December 1972, Series 55, p. 595.
    16. 16)
    17. 17)
    18. 18)
    19. 19)
    20. 20)
    21. 21)
      • 25. Gradshteyn, I.S., Ryzhik, I.M.: ‘Table of integrals, series and products’ (Academic Press Inc., New York and London, 1965).
    22. 22)
    23. 23)
    24. 24)
    25. 25)

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