Emissivity of liquid germanium in visible and near infrared region
作者:
Eiryo Takasuka,
Eiji Tokizaki,
Kazutaka Terashima,
Shigeyuki Kimura,
期刊:
Journal of Applied Physics
(AIP Available online 1997)
卷期:
Volume 82,
issue 5
页码: 2590-2594
ISSN:0021-8979
年代: 1997
DOI:10.1063/1.366071
出版商: AIP
数据来源: AIP
摘要:
The normal emissivity of liquid germanium was determined from the direct measurement of the thermal radiation from the liquid surface and a blackbody. The monochromatic emissivity in the visible region and the average emissivity in the near infrared region were measured to investigate the wavelength dependence. The emissivity of the liquid has little dependence on the wavelength and is0.217±0.002for the visible region (600–900 nm) and is0.200±0.005for the near infrared region at the melting point. The emissivity has a weak dependence on the temperature from 910 to 1160 °C. The weak dependence agrees well with a dielectric response of the free electrons. ©1997 American Institute of Physics.
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