期刊
CHEMICAL PHYSICS LETTERS
卷 399, 期 4-6, 页码 490-495出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.cplett.2004.10.060
关键词
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The temperature-dependent ultraviolet absorption cross-section for CO2 has been measured in shock-heated gases between 1500 and 4500 K at 216.5, 244, 266, and 306 nm. Continuous-wave lasers provide the spectral brightness to enable precise time-resolved measurements with the microsecond time-response needed to monitor thermal decomposition Of CO2 at temperatures above 3000 K. The photophysics of the highly temperature dependent cross-section is discussed. The new data allows the extension of CO2 absorption-based temperature sensing methods to higher temperatures, such as those found in behind detonation waves. (C) 2004 Elsevier B.V. All rights reserved.
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