Innovative scheme for high-repetition-rate imaging of CN radical

被引：5

作者：

Satija, Aman ^{[1
]}

Ruesch, Morgan D. ^{[2
]}

Powell, Michael S. ^{[1
]}

Son, Steven F. ^{[1
]}

Lucht, Robert P. ^{[1
]}

机构：

[1] Purdue Univ, Mech Engn Dept, 585 Northwestern Ave, W Lafayette, IN 47907 USA

[2] Purdue Univ, Sch Aeronaut & Astronaut, 480 Northwestern Ave, W Lafayette, IN 47907 USA

来源：

OPTICS LETTERS | 2018年 / 43卷 / 03期

关键词：

LASER-INDUCED FLUORESCENCE; PLIF;

D O I：

10.1364/OL.43.000443

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We have employed, to the best of our knowledge, a novel excitation scheme to perform the first high-repetition-rate planar laser-induced fluorescence (PLIF) measurements of a CN radical in combustion. The third harmonic of a Nd:YVO4 laser at 355 nm due to its relatively large line-width overlaps with several R branch transitions in a CN ground electronic state. Therefore, the 355 nm beam was employed to directly excite the CN transitions with good efficiency. The CN measurements were performed in premixed CH4 - N2O flames with varying equivalence ratios. A detailed characterization of the high-speed CN PLIF imaging system is presented via its ability to capture statistical and dynamical information in these premixed flames. Single-shot CN PLIF images obtained over a HMX pellet undergoing self-supported deflagration are presented as an example of the imaging system being applied towards characterizing the flame structure of energetic materials. (C) 2018 Optical Society of America

引用

页码：443 / 446

页数：4

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