Normal spectral emissivity of stable and undercooled liquid silicon using electromagnetic levitation in a dc magnetic field

Hidekazu Kobatake, Hossein Khosroabadi, Hiroyuki Fukuyama

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Normal spectral emissivity of a stable and undercooled liquid (1660-1790 K) was determined for wavelengths of 780-920 nm using direct measurement of radiance of statically electromagnetically levitated liquid silicon: a dc magnetic field suppressed surface oscillation and the transitional motion of the silicon droplet. A spectrometer used for spectral radiance measurement was calibrated using a quasi-blackbody with a copper metal fixed point. The emissivity shows weak negative wavelength dependence, and negligible temperature dependence. The wavelength dependence of the normal spectral emissivity is expressible using the Drude free electron model.

Original languageEnglish
Article number015102
JournalMeasurement Science and Technology
Volume22
Issue number1
DOIs
Publication statusPublished - 2011 Jan

Keywords

  • Electromagnetic levitation
  • High-temperature liquid silicon
  • Normal spectral emissivity
  • Superconducting magnet
  • Supercooled liquid silicon

ASJC Scopus subject areas

  • Instrumentation
  • Engineering (miscellaneous)
  • Applied Mathematics

Fingerprint Dive into the research topics of 'Normal spectral emissivity of stable and undercooled liquid silicon using electromagnetic levitation in a dc magnetic field'. Together they form a unique fingerprint.

  • Cite this