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Interference of coherently scattered signals in the laser SRS-CARS monitoring of hydrogen concentration in gas mixturesстатья
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 10 августа 2018 г.
- Авторы: Mikheev G.M., Kaluzhnyi D.G., Popov A.Yu, Mogileva T.N.
- Журнал: Technical Physics
- Том: 50
- Номер: 2
- Год издания: 2005
- Издательство: Maik Nauka/Interperiodica Publishing
- Местоположение издательства: Russian Federation
- Первая страница: 220
- Последняя страница: 226
- DOI: 10.1134/1.1866439
- Аннотация: The possibility of measuring the hydrogen impurity concentration in dense gas mixtures by coherent anti-Stokes Raman scattering (CARS) is studied. In this technique, biharmonic laser pumping based on stimulated Raman scattering (SRS) in compressed hydrogen is used. Because of the interference between the coherent scattering components from buffer gas molecules and molecules of the impurity to be detected, the signal recorded may depend on the hydrogen concentration by a parabolic law, which has a minimum and makes the results uncertain. It is shown that this uncertainty can be removed if the frequency of the biharmonic laser pump, which is produced by the SRS oscillator, somewhat differs from the frequency of molecular oscillations of hydrogen in the test mixture. A sensitivity of 5 ppm is obtained as applied to the hydrogen-air mixture under normal pressure. The coefficients of the nonresonance cubic hyperpolarizability of molecules and atoms are measured relative to nitrogen in a number of gas media.
- Добавил в систему: Могилева Татьяна Николаевна
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|---|---|---|---|---|
| 1. | Mikheev2005_Article_InterferenceOfCoherentlyScatte.pdf | Mikheev2005_Article_InterferenceOfCoherentlyScatte.pdf | 88,9 КБ | 19 июня 2018 [mogileva] |