Measurement of surface tension for molten silicon by electromagnetic levitation combined with static magnetic field

Noriaki Takenaga, Taketoshi Hibiya, Hiroyuki Fukuyama, Masahito Watanabe, Shumpei Ozawa, Hidekazu Kobatake, Satoshi Awaji

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We have attempted to superimpose a static magnetic field to electromagnetic levitation, so as to investigate the possibility, whether application of a magnetic field can improve a surface tension measurement technique using an oscillating drop method. Movement of gravitational center of a droplet, which causes measurement error, was suppressed by applying a magnetic field. Amplitude of oscillation of the "Area" and "Sum" modes were attenuated vanishingly above 0.5T, whereas oscillation of the "Diff" mode exclusively remained although the amplitude became small in the magnetic field. Using frequencies of these three modes, frequency of surface oscillation of m = 0, m = ±1 and m = ±2 modes were derived. This suggests that oscillation of the m = 0 and m = ±1 modes are damped by applying a static magnetic filed. However, there still remains an argument, whether remained oscillation really corresponds to that of m = ±2 or that of axial rotation in the static magnetic field.

Original languageEnglish
Title of host publicationAIAA 57th International Astronautical Congress, IAC 2006
PublisherAmerican Institute of Aeronautics and Astronautics Inc.
Pages627-632
Number of pages6
ISBN (Print)9781605600390
DOIs
Publication statusPublished - 2006 Jan 1
EventAIAA 57th International Astronautical Congress, IAC 2006 - Valencia, Spain
Duration: 2006 Oct 22006 Oct 6

Publication series

NameAIAA 57th International Astronautical Congress, IAC 2006
Volume1

Other

OtherAIAA 57th International Astronautical Congress, IAC 2006
CountrySpain
CityValencia
Period06/10/206/10/6

ASJC Scopus subject areas

  • Space and Planetary Science
  • Aerospace Engineering

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