JPS5522156A - Optical acoustic analyzer - Google Patents
Optical acoustic analyzerInfo
- Publication number
- JPS5522156A JPS5522156A JP9528278A JP9528278A JPS5522156A JP S5522156 A JPS5522156 A JP S5522156A JP 9528278 A JP9528278 A JP 9528278A JP 9528278 A JP9528278 A JP 9528278A JP S5522156 A JPS5522156 A JP S5522156A
- Authority
- JP
- Japan
- Prior art keywords
- sample
- gases
- energy
- thermal
- chamber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/1702—Systems in which incident light is modified in accordance with the properties of the material investigated with opto-acoustic detection, e.g. for gases or analysing solids
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
PURPOSE:To make it possible to accurately analyze various smaples such as suspension, solid or livings, without effecting special treatments, by irradiating the samples with an optical energy so that the quantity converted into a thermal energy is detected by a thermal flow meter type detecting element. CONSTITUTION:A sample carriage 4 on which a sample 2 is placed is hermetically attached to a sample chamber 1 through a seal element 5. If an optical energy is irradiated upon the sample 2 in an interrupted manner through a second transparent window 3', a standard chamber 6 and a first transparent window 3, it is partially absorbed by the sample 2. A portion of the absorbed energy is converted into a thermal energy, which is transmitted to the gases surrounding the sample 2 so that the pressure in the chamber 1 is raised by the thermal expansion of the gases. Since the pressure rise due the gases having absorbed the optical energy in the chambers 6 and 1 is offset by each other, the gases are synchronized with the period of the optical interruption to vibrate between the chambers 1 and 6 through a passage 7. The resultant vibrations are detected as AC electric signals by a thermal flow meter type detecting element which is arranged in the passage 7.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53095282A JPS6045818B2 (en) | 1978-08-03 | 1978-08-03 | photoacoustic spectrometer |
| DE19792927432 DE2927432A1 (en) | 1978-07-08 | 1979-07-06 | Photo-acoustic spectrometer for solid and liq. samples - has connected gas-filled reference and sample chambers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53095282A JPS6045818B2 (en) | 1978-08-03 | 1978-08-03 | photoacoustic spectrometer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5522156A true JPS5522156A (en) | 1980-02-16 |
| JPS6045818B2 JPS6045818B2 (en) | 1985-10-12 |
Family
ID=14133410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP53095282A Expired JPS6045818B2 (en) | 1978-07-08 | 1978-08-03 | photoacoustic spectrometer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6045818B2 (en) |
-
1978
- 1978-08-03 JP JP53095282A patent/JPS6045818B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6045818B2 (en) | 1985-10-12 |
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