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首页> 外文期刊>Chemical Physics Letters >TECHNIQUES FOR STIMULATED RAMAN EXCITATION AND CARS DETECTION OF RADICALS CREATED BY PHOTODISSOCIATION
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TECHNIQUES FOR STIMULATED RAMAN EXCITATION AND CARS DETECTION OF RADICALS CREATED BY PHOTODISSOCIATION

机译:光解离产生的自由基的拉曼激发和汽车检测技术

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摘要

CARS and SRE of radicals created by photodissociation were attempted using a laser system with a 1 cm(-1) bandwidth The difficulty of observing these spectra due to interference from non-resonant background and the resulting asymmetric CARS lineshape is discussed and demonstrated with N2O, HS and OH. Polarization filtering techniques are described and improvements resulting from their use are presented. The HS radical, which has a Raman frequency on the low energy side of the H2S precursor molecule, could not be detected, while OH, which has a Raman frequency on the high energy side of the HNO3 precursor molecule, was easily observed. [References: 18]
机译:通过使用1 cm(-1)带宽的激光系统尝试了光解离产生的自由基的CARS和SRE。讨论并通过N2O讨论了由于非共振背景的干扰以及由此产生的不对称CARS线形而难以观察这些光谱的问题, HS和OH。描述了偏振滤波技术,并介绍了其使用带来的改进。无法检测到H2S前体分子的低能侧具有拉曼频率的HS自由基,而易于观察到HNO3前体分子的高能侧具有拉曼频率的OH自由基。 [参考:18]

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