Physics – Plasma Physics
Scientific paper
Oct 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aps..dppci1003g&link_type=abstract
American Physical Society, 45th Annual Meeting of the Division of Plasma Physics, October 27-31, 2003, Albuquerque, New Mexico,
Physics
Plasma Physics
Scientific paper
It is widely believed that almost all magnetic fields in a natural environment are a result of the dynamo process -- field generation in a moving nearly homogeneous electroconducting fluid in deeps of celestial bodies such as Earth, most of the planets, Sun, another stars and even galaxies. We are not going to model in the laboratory any particular celestial body. Our aim is to demonstrate the very idea -- intense motion in a large volume of good electroconducting liquid creates magnetic field. As the working fluid serve 2 qm of molten sodium -- the best electroconducting liquid available. It is filled in a 3m long and 0.8m thich annular vessel. At the top in it is propeller powered by two 100kW motors and producing swirling sodium circulation within the vessel. At high enough circulation appears magnetic field. Field pattern slowly rotates round the vessel's axis rising AC signal in any field's sensor. The observed field strength is about 0.1T. The experiment was at first computer simulated and optimized. Then by means of water the desired flow structure was achieved. After this the vessel was filled with sodium and magnetic field observed exactly as predicted. In present meeting we will touch details of field pattern, fields turbulent spectra, field produced motions in sodium etc as well as mathematical background of the experiment.
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