A Fixed Path Ultrasonic Interferometer for Absorption Measurements on Gases
| Autor: | J. F. W. Bell |
|---|---|
| Rok vydání: | 1953 |
| Předmět: |
Argon
Materials science Acoustics and Ultrasonics business.industry chemistry.chemical_element Crystal Neon Interferometry symbols.namesake Optics Arts and Humanities (miscellaneous) chemistry Excited state symbols Ultrasonic sensor Atomic physics Rayleigh scattering Absorption (electromagnetic radiation) business |
| Zdroj: | The Journal of the Acoustical Society of America. 25:96-100 |
| ISSN: | 0001-4966 |
| DOI: | 10.1121/1.1907017 |
| Popis: | A fixed path interferometer, using variable temperature for the measurement of the absorption in gases in the low f/p region is described. Its use is illustrated by measurements on argon, neon, air, nitrogen, and nitrogen‐hydrogen mixtures at 250 kc. The values found for argon and neon were above classical by 40 and 65 percent, respectively. The discrepancies are ascribed to Rayleigh cross modes in the ultrasonic waves excited by the quartz crystal transducer rather than to any departure from classical theory. Cross modes and their influence on ultrasonic measurements are discussed. Data on the performance of two crystals at 250 and 500 kc are given. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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