| 摘要 |
<p>PURPOSE:To obtain a stable infrared ray source without any sharp change in the quantity of light with a high spectral radiation rate and a high temperature, by heating a metallic heating element with electric energization thereof while a ceramic wall is provided in the perimeter along the heating section. CONSTITUTION:A ceramic pipe 12 as ceramic wall is provided in the perimeter along the axis of a coil of a metallic heating element 11 formed in the shape of a coil. The ceramic pipe 12 is mainly composed of a transition element oxide and the spectral emissivity thereof is almost constantly above 0.8 in an infrared area with the wave length thereof in the vicinity of 2mum-25mum. A lead 13 of the metal heat generating body 11 is held within the ceramic pipe 12 any being supported with a binder 14. Glass 5 is packed as insulating material in the perimeter of a steam 3 provided on a support plate 15. A sample is irradiated with infrared ray from a infrared ray source and is analyzed through the measurement of changes caused in the spectrum of the infrared rays.</p> |
