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iodine fluorescence
    Dependence of Intensity of Laser Induced Iodine Fluorescence(LIIF) versus Exciting Laser Wavelength
    激光诱导碘荧光(LIIF)强度与激发激光波长的关系
    THEORETIC INVESTIGATION OF MEASURING PARAMETERS OF FLOWFIELD BY LASER INDUCED IODINE FLUORESCENCE
    用激光诱导碘荧光法测流场参数的理论研究
    The dependence of intensity of laser induced iodine fluorescence (LIIF) versus the exciting laser wavelength was theoretically analyzed. In the experiment,the exciting lasers' wavelengths were 532nm、514.5nm、501.7nm、496.5nm and 488nm. The result indicated that each of the five wavelength lasers can induce the iodine fluorescence.
    理论上简要地分析了在可见光波段碘荧光强度与激发激光波长的关系 ,并用波长为 5 32nm半导体倍频Nd :YAG激光、波长为 5 14 .5nm、5 0 1.7nm、4 96 .5nm和 4 88nm的氩离子激光激发碘分子 ,通过对获得的荧光信号分析得出 ,五种波长的激光均可诱导出碘荧光
    In the same condition,the fluorescence's intensity induced by 532nm laser is higher than that induced by 514.5nm laser,these two wavelength lasers are good exciting lasers for iodine fluorescence.
    对相同的激光功率 ,波长为 5 32nm的倍频Nd :YAG诱导出的碘荧光信号比波长为 5 14 .5nm的氩离子激光强 ,两种激光均可作为碘气体的激发激光。
    The laser induced iodine fluorescence(LIIF) is an advanced technology to visualize the flowfield. To get the precision of using this method to investigate the mixed performance of the nozzle in chemical lasers, the cold flowfield of HYLTE nozzle in CW DF/HF chemical laser is simulated. The flowfield which uses the mixed gas made up of helium and iodine as the oxidant, the helium gas used as fuel is measured.
    激光诱导碘荧光(LIIF)是一种很好的流场测量技术,为了验证该方法测量化学激光器流场混合性能的精度,模拟得到连续波DF HF化学激光器的HYLTE喷管冷流场,并计算了用氦碘混合气体作为氧化剂流、用氦气作为燃料流的HYLTE喷管的流场。
    The hypersonic low temperature (HYLTE) nozzle is widely used in continuous wave (CW) DF/HF chemical laser. To realize the mixing performance of this kind of nozzle, the laser induced iodine fluorescence (LIIF) was used to visualize the mixing flowfield of the single HYLTE nozzle.
    高超音速低温(HYLTE)喷管是目前在燃烧驱动的连续波DF/HF化学激光器中广泛使用的一种喷管,为了掌握该喷管的混合性能,用激光诱导碘荧光(LIIF)法对实验室的单喉道小型燃烧驱动连续波DF/HF化学激光器的高超音速低温喷管的流场进行了测量。
 

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