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量热阵列式激光束能量分布测量系统研制 被引量:6
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作者 段刘华 谢永杰 +4 位作者 戢运峰 王立君 刘峰 林新伟 陈振强 《红外与激光工程》 EI CSCD 北大核心 2010年第6期1110-1114,共5页
为了实现对高能密度激光束分布的测量,提出了高占空比蜂窝阵列结合分立隔热式能量探头的设计思想,研制出了一种耐激光辐照能力强、测量稳定的激光参数测量系统,该系统主要由蜂窝状阵列板、多路量热探头、多通道高速数据采集单元和相应... 为了实现对高能密度激光束分布的测量,提出了高占空比蜂窝阵列结合分立隔热式能量探头的设计思想,研制出了一种耐激光辐照能力强、测量稳定的激光参数测量系统,该系统主要由蜂窝状阵列板、多路量热探头、多通道高速数据采集单元和相应数据处理软件组成。测量系统空间占空比为62%,光强分布测量不均匀性优于5%,测量动态范围达600倍,总能量测量不确定度优于8.5%。量热阵列测量系统的研制成功解决了大面积、大动态范围激光束总能量和光强分布绝对测量的技术难题,为激光束能量绝对分布测量提供了一种有效的手段。 展开更多
关键词 能量探测器 量热技术 空间能量分布
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Some problerns in adsorption and calorimetric studies of the steps of catalytic processes
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作者 Victor E.Ostrovskii 《Journal of Natural Gas Chemistry》 CAS CSCD 2004年第3期123-147,共25页
Principal side factors as well as technical and procedural peculiarities capable of distorting the results of measurements of adsorbed and desorbed amounts, of falsifying the nature of the processes proceeding in the ... Principal side factors as well as technical and procedural peculiarities capable of distorting the results of measurements of adsorbed and desorbed amounts, of falsifying the nature of the processes proceeding in the systems under study, and of promoting artifacts in calorimetric and other studies of gas chemisorption on powders are considered. Modified techniques and procedures allowing the elimination of sources of side phenomena and artifacts and freeing traditional glass static adsorption apparatuses and experimental procedures from undesirable factors and peculiarities are proposed. Some available chemisorption and calorimetric data representing artifacts and also some data that are not artifacts but, due to imperfections of chemisorption techniques, show up as artifacts are presented and discussed. Several applications of the improved techniques and procedures to calorimetric and adsorption studies of the steps of catalytic processes proceeding on the basis of natural gas and of products of its processing are presented and discussed. 展开更多
关键词 adsorption techniques and procedures adsorption and calorimetric artifacts calorimetric and chemisorption techniques chemisorption heats catalytic mechanisms chemisorption mechanisms heats of adsorption.
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