发明授权
- 专利标题： Radial and azmuthal non-resonant open-tubular optoacoustic cell
- 专利标题（中）： 径向和azmuthal非共振开放管状光电池
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申请号： US777474申请日： 1985-09-18
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公开(公告)号： US4688942A公开(公告)日： 1987-08-25
- 发明人: Medona B. Denton , Scott B. Tilden
- 申请人： Medona B. Denton , Scott B. Tilden
- 申请人地址： DC Washington
- 专利权人： The United State of America as represented by the Secretary of the Navy
- 当前专利权人： The United State of America as represented by the Secretary of the Navy
- 当前专利权人地址： DC Washington
- 主分类号： G01N21/17
- IPC分类号： G01N21/17 ; G01N21/01 ; G01N21/59
摘要：
A radial or azmuthal non-resonant flow-through optoacoustic cell is operated without windows, completely eliminating the window background interference. The cell is constructed of an elongated tube the length of which is 34.times.10.sup.3 cm.times.1/f, where f is the light source modulating frequency and is made of conducting material which is perforated along the center one-half length with holes. A metalized sheath surrounds this center region to form a capacitor microphone.
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