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| Title:
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Magnetic guns with cylindrical permanent magnets |
| Type:
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Journal articleJournal article |
| Participant(s):
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Forfatter:
Vokoun, David
Institute of Physics of ASCR, v.v.i., CzechRepublic
Technical University of Denmark
Email:
Forfatter:
Heller, Luděk
Institute of Physics of ASCR, v.v.i., CzechRepublic
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| Abstract:
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The motion of a cylindrical permanent magnet (projectile) inside a tubular permanent magnet, with both magnets magnetized axially, illustrates nicely the physical principles behind the operation of magnetic guns. The force acting upon the projectile is expressed semi-analytically as derivative of the magnetostatic interaction energy. For comparison, the forces involved are also calculated numerically using finite elements methods. Based on the conservation of the magnetostatic and kinetic energies, the exit and asymptotic velocities are determined. The derived formulas can be used to optimize the generated forces and motion of the inner cylindrical magnet. |
| Published:
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in journal: Journal of Magnetism and Magnetic Materials (ISSN: 0304-8853) (DOI: http://dx.doi.org/10.1016/j.jmmm.2011.12.026), vol: 324, issue: 9, pages: 1715-1719, 2012 |
| DOI:
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