发明名称 |
OXYGEN ANALYSIS EMPLOYING ABSORPTION SPECTROSCOPY |
摘要 |
<p>OXYGEN ANALYSIS EMPLOYING ABSORPTION SPECTROSCOPY A method and apparatus are described for detecting the presence and amount of elemental oxygen in a sample cell. The intensity of extreme ultraviolet light passing through the sample cell at a wavelength band overlapping at least one of the Schumann-Runge absorption lines of oxygen is detected and compared with a predetermined non-absorbed condition of the ultraviolet light. The non-absorbed condition may be achieved by narrowing the wavelength band such that the band does not overlap the Schumann-Runge absorption line, or may be achieved by detecting the ultraviolet light passing through a reference cell. Also described is a novel ultraviolet source in which a cold zone captures neutral atoms of the emission gas to reduce the affect of resonance absorption of emitted ultraviolet light by such neutral atoms.</p> |
申请公布号 |
CA1261167(A) |
申请公布日期 |
1989.09.26 |
申请号 |
CA19850492501 |
申请日期 |
1985.10.08 |
申请人 |
ANDROS ANALYZERS INCORPORATED |
发明人 |
WONG, JACOB Y. |
分类号 |
G01J3/433;G01N21/33;(IPC1-7):G01N21/27 |
主分类号 |
G01J3/433 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|