化学激光器

介绍了利用自发喇曼散射光谱测量氧碘化学激光器单态氧发生器抓气利用率的原理及实验装置,并给出了在以氮气作为稀释气的0.1 mol/s射流式氧发生器上测试的结果.测试相对误差小于12%。由于该方法只需要通过测量喇曼谱线相对强度之比,即可算出氯的利用率,因此不需要另外的标定实验,从而避免了因标定带来的影响。该方法减小了测试误     

自发喇曼成像法在线测量流场组分浓度（Ⅱ）

介绍了利用自发Raman散射光谱测量低压气流组分绝对浓度的方法，在流动状态下得到了不同压力的自发喇曼散射光谱，检测最低压力为133Pa；对于含N2氧气流在已知N2浓度时实时标定检测了O2的绝对浓度，测量误差小于8％。，     

利用喇曼光谱测量氧碘激光器氧发生器的O2（a^1△）产率

利用自发喇曼成像技术实时监测氧碘激光器O2（a^1△）发生器流场组分，得到了发生器气流中O2（a^1△）和O2（X^3∑）以及N2的自发喇曼散射光谱，由此得到了不同条件下的O2（a^1△）产率。测量误差不超过8%。     

拉曼散射光谱在氧碘化学激光器参数测试上的应用

介绍了拉曼散射在氧碘化学激光器参数测试上的应用,给出了在流量为0 5mol/s的射流式氧发生器上的实验结果。采用一套测试装置可以同时进行O2(a1Δ)产率和氯气利用率测试,提高了测试效率;由于无需进行另外的标定实验,提高了测试精度,为此该方法可以极大地改善目前O2(a1Δ)产率和氯气利用率测试精度较低的现状。     

自发喇曼成像法在线测量流场组分浓度

 介绍了自发喇曼成像技术实时监测流场组分浓度的方法,利用Nd：YAG脉冲激光器以及ICCD和光谱仪对大气进行了不同实验条件的测试,得到了影响谱线强度及测试精度的几个因素;得到了大气流场各主要成分的自发喇曼散射光谱和绝对浓度,测量误差小于8%。该技术可望在氧碘化学激光器单重态氧发生器物种浓度测定时得以应用以改善O₂(¹Δ)浓度测试精度较低的现状。     

自发喇曼成像法在线测量流场组分浓度(II)

 介绍了利用自发Raman散射光谱测量低压气流组分绝对浓度的方法，在流动状态下得到了不同压力下的自发喇曼散射光谱，检测最低压力为133帕；对于含N₂氧气流在已知N₂浓度时实时标定检测了O₂的绝对浓度，测量误差小于8%。     

利用喇曼光谱测量氧碘激光器氧发生器的O2（a1Δ）产率

 利用自发喇曼成像技术实时监测氧碘激光器O₂(¹Δ)发生器流场组分，得到了发生器气流中O₂(¹Δ)和 O₂(X³Σ)以及N₂的自发喇曼散射光谱，由此得到了不同条件下的O₂(¹Δ)产率，测量误差不超过8%。     

横向射流式单重态氧发生器的性能实验研究

 对氧碘化学激光器的单重态氧发生器（SOG）进行了改进，采用横向射流方式，并对该横向射流式单重态氧发生器的性能进行了检测。实验中过氧化氢碱溶液温度控制在－16℃左右,氯气流量为530mmol/s，He与氯气的流量比为3;采用PS法测量单重态氧分子的产率,吸收法测量氯气的利用率和相对水含量。得出如下结论:在不使用冷阱和分离器的情况下，最高单重态氧分子产率达到58%, 氯气利用率在80%以上,相对水含量小于等于0.5;气体达到最大流量时,发生器仍然能稳定地工作。     

KTiOPO＿4晶体纵横模劈裂的喇曼谱

在室温下测量了ＫＴｉＯＰＯ＿４单晶的偏振喇曼散射谱，应用９０°散射及背散射得到了各模的峰位值，其中Ｂ＿１（ＬＯ）模、Ｂ＿２（ＬＯ）模的喇曼谱测量尚未见报道过。根据ＬＯ－ＴＯ劈裂的实验结果，计算出该晶体极化模的有效电荷、振子强度及沿对称轴方向的静态介电常数。     

蒽分子晶体的喇曼散射

在室温和液氮温度下,用氩离子激光器的5145Å激光激发,测量了蒽单品的喇曼散射谱,其喇曼活性主模振动的实验值和理论值符合的较好。计算了旋转振动的均方振幅,并对低波数振动喇曼谱的温度效应进行了讨论。     

Supersonic COIL with angular jet singlet oxygen generator

Supersonic Chemical Oxy-iodine Laser has been developed using a Singlet Oxygen Generator (SOG) with a novel approach. Generated singlet oxygen is taken out of the SOG at an angle of 40° to avoid the problem of carry over of droplets, which is one of the major drawbacks of horizontal system. The system has been operated up to 22 mmol/s chlorine flow rates. Chlorine utilization and singlet oxygen observed have been more than 90% and 60%, respectively. The observed maximum output power was 350 W, thus yielding a chemical efficiency of 17.5%.     

氧碘化学激光器中转盘式单重态氧发生器研究

 通过对单重态氧发生器（SOG）内的传质、传热及化学动力学过程的研究，提出高效SOG的设计原则，并研制出一台可用于高功率超音速氧碘化学激光器（COIL）的SOG， 其Cl₂流量在0.6~1mol/s时，O₂(¹Δ)分压可达333.3~519.9Pa； O₂(¹Δ)浓度达到50%~68%；Cl₂利用率大于90%；混合气中水蒸汽含量小于10%。     

喷射型单重态氧发生器性能研究

单重态氧发生器作为氧碘化学激光的核心部件,为化学激光器提供化学能。通过对工业喷射器及旋风分离器的研究,结合产生单重态氧的化学反应环境,进行了大量模拟及设计改进工作,研制了一种新型喷射型单重态氧发生器,并进行了相关实验研究。喷射型单重态氧发生器利用喷嘴能够产生比传统发生器类型更多的气液表面,获得足够的反应效率,可以大幅度降低发生器液体使用量,从而减小发生器辅助系统,提高体积效率。为满足O2（1）停留时间短及分离效率高的要求,利用气液两相喷射的高初速度以旋风分离器完成气液分离。新型发生器氯气利用率可达97%~99%,其O2（1）产率为40%~50%。     

p-τ值对COIL的影响的实验研究

 实验研究了单重态氧发生器（SOG）的p-τ值，即初始氯气分压与停留时间的乘积，对化学氧碘激光器（COIL）的影响，并分析了诸多实验因素对SOG的p-τ值的影响。对于提高COIL的化学效率具有很重要的实际意义。     

Characterization and Studies on Hydro Dynamically Stable Operation of an Angular Jet SOG for COIL

Chemical oxygen-iodine Laser (COIL) is one of the fast emerging high power laser source for near Infrared (=1.315m) laser generation. The heart of the system is the singlet oxygen generator (SOG) which is a pumping source for this laser. A Jet type SOG with a novel approach was designed and fabricated. Singlet oxygen was taken out of the SOG at an angle of 40° thus avoiding the carry over of droplets, which is one of the major drawbacks of horizontal system. The preliminary results have been reported in our earlier publication. The present paper discusses the performance of this generator for various operational conditions viz. diluent's gas nitrogen / helium, basic hydrogen peroxide composition, generator pressure and gas velocity. Further, conditions for the stable operation from generator as well as chlorine injection point of view have been identified.     

DPD光谱分析法快速测定水中游离氯浓度

采用分光光度计测量了游离氯溶液与氨基-N,N-二乙基苯胺(DPD)试剂反应后溶液在可见光范围内的吸收光谱。讨论了吸收光谱的峰值波长随时间的变化关系,通过对不同浓度溶液的实验,得出了光谱测量误差,此误差值小于0．04％,并采用非线性数据拟合方法对实验数据进行了分析,找出了游离氯浓度与光透过率之间的关系式并给出了评价参数。     

Experimental investigation of chemical oxygen-iodine laser

Results of an experimental investigation of a chemical oxygen-iodine laser (COIL) are presented. We determine the factors influencing the efficiency of a chemical singlet-oxygen generator (SOG) of the bubbler type operating on the chlorination of an alkaline solution of oxygen peroxide. We describe SOG constructions. A cw COIL with output power up to 400 W is developed on the basis of the investigated SOG. The feasibility of a modular construction of high-power COIL is demonstrated. A power-output level of 1 kW was achieved with a two-section laser. The feasibility is analyzed of COIL operation in a pulsed regime by pulsed bulk accrual of iodine atoms. We show that in this regime the laser can be operated without a low-temperature trap. An advantage of such a regime is also the possibility of controlling, in a wide range, the lasing pulse duration. A strong influence of molecular chlorine on the energy content of the active medium is observed when alkyliodides are used as iodine donors. The possibilities of using a pulsed COIL for controlled thermonuclear fusion are discussed. Translated from Trudy Fizicheskogo Instituta im. P. N. Lebedeva Akademiya Nauk SSSR, Vol. 194, pp. 114–147 (1989).     

High throughput jet singlet oxygen generator for multi kilowatt SCOIL

A jet flow singlet oxygen generator (JSOG) capable of handling chlorine flows of nearly 1.5 mol s⁻¹ has been designed, developed, and tested. The generator is designed in a modular configuration taking into consideration the practical aspects of handling high throughput flows without catastrophic BHP carry over. While for such high flow rates a cross-flow configuration has been reported, the generator utilized in the present study is a counter flow configuration. A near vertical extraction of singlet oxygen is effected at the generator exit, followed by a 90° rotation of the flow forming a novel verti-horizontal COIL scheme. This allows the COIL to be operated with a vertical extraction SOG followed by the horizontal arrangement of subsequent COIL systems such as supersonic nozzle, cavity, supersonic diffuser, etc. This enables a more uniform weight distribution from point of view of mobile and other platform mounted systems, which is highly relevant for large scale systems. The present study discusses the design aspects of the jet singlet oxygen generator along with its test results for various operating ranges. Typically, for the intended design flow rates, the chlorine utilization and singlet oxygen yield have been observed to be ∼94% and ∼64%, respectively.     

无稀释气立式氧碘化学激光器的设计与实验

 分析了氧碘化学激光器（COIL）在无稀释气条件下工作所带来的一系列问题和对其性能的影响，并提出了相应的解决方法，进而对COIL结构和相关参数进行了有针对性的设计和实验研究。在氯气流量为117.6 mmol/s时,平均输出功率2.25 kW，化学效率达到21.1%，比功率0.22 J/g；分别以氦气和氮气为稀释气，对COIL进行了参数和实验数据比较。