Energy transfer in combustion diagnostics: experiment and modeling.

Energy transfer in combustion diagnostics: experiment and modeling.
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燃烧诊断中的能量转移:实验和建模。

DOI:
10.1039/b102058g
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发表时间:
2001
影响因子:
3.4
通讯作者:
K. Kohse
K. Kohse
中科院分区:
化学2区
文献类型:
--
作者:
A. Brockhinke;K. Kohse

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激光诱导荧光(LIF) OH (a2sigma +)在几个大气压火焰使用短脉冲激光系统(80 ps持续时间)与强化条纹相机测量。二维信号检测技术允许人们同时监测旋转和振动弛豫以及电子淬火。将受能量转移影响的旋转分辨LIF光谱与速率方程模型的结果进行了比较,发现两者吻合得相当好。结果表明,通过宽带技术检测到的荧光的显著贡献是由于振动能量转移(VET)填充的水平。讨论了皮秒LIF技术对时间分辨、无淬灭OH检测的意义。在OH (a2 sigma +, v' = 2)能级激发状态后,对由VET填充的能级产生的荧光光谱进行了详细分析。
Laser induced fluorescence (LIF) of OH (A 2 sigma +) is measured in several atmospheric-pressure flames using a short-pulse laser system (80 ps duration) in conjunction with an intensified streak camera. The two-dimensional signal-detection technique allows one to simultaneously monitor rotational and vibrational relaxation as well as electronic quenching. Rotationally-resolved LIF spectra affected by energy transfer are compared with the results of a rate-equation model and are found to be in reasonably good agreement. It is shown that a significant contribution of fluorescence detected by broad-band techniques is due to levels populated by vibrational energy transfer (VET). Implications for picosecond LIF techniques for the time-resolved, quench-free detection of OH are discussed. A detailed analysis is presented for fluorescence spectra originating from levels populated by VET after excitation of states in the OH (A 2 sigma +, v' = 2) level.
基于OH A2Σ-X2π分子发射光谱理论计算的火焰温度测量
DOI: --
发表时间: 2022
期刊:
影响因子: --
作者:
李政勳;任方思;中谷辰爾;津江光洋
通讯作者: 津江光洋