Photo-dissociation on Irradiation with a High Power VUV Laser

高功率 VUV 激光照射下的光解离

基本信息

批准号：
06640653
负责人：
NAKASHIMA Nobuaki
金额：
$ 1.28万
依托单位：
Osaka University
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1994
资助国家：
日本
起止时间：
1994 至 1995
项目状态：
已结题

项目摘要

Photo-dissociation and related chemistry of systems of carbon dioxide and saturated hydrocarbons were studied using an F_2 laser. New findings were obtained for the systems of CO_2. Laser dissociation was applied for surface processing of optical elements.1. Photo-reduction of CO_2 in the presence of H_2 or hydrocarbonsPlasma chemistry may be useful to reprocess CO_2, because a high yield of reduction takes place. Plasma can be generated by surplus energy from a fusion reactor, and/or focusing sun light. Another point is a possibility of a chain reaction. In the system of CO,CH_2O is suggested to from with a quantum yield higher than 1.0. Therefore, VUV laser chemistry as well as laser break down chemistry were studied in this project.(1) PhotochemistryMajor products were formaldehyde and methane, and a small amount of alcohol was detected. The yield was 1.5% under 40.5MPa of H_2 and 26.6kPa of CO_2 and 20% for a system of H_2 and CO under the same pressures. A chain reaction mechanism was suggested.(2) Laser breakdownSimilar photo-products were obtained from a gas mixture of H_2, and CO_2 or CO by laser induced plasma.(3) Photo-reduction of CO_2 and oxidation of hydrofluorocarbonsThe corresponding alcohols weredetected. The reaction mechanisms were discussed based on the formation of hot alcohols and its collisional relaxation.2.Surface processing of optical elementsVUV and UV laser ablation has been applied for processing of optical flat elements ; PMMA,glass, etc.

使用F_2激光研究了二氧化碳和饱和碳氢化合物系统系统的照片分解和相关化学。获得了CO_2系统的新发现。将激光解离用于光学元件的表面处理1。在H_2或Hydrocarbonsplasma Chemistry存在的情况下，CO_2的摄影减少可能对重新加工CO_2有用，因为发生了高降低产量。血浆可以通过融合反应器和/或聚焦太阳光产生的盈余能量产生。另一点是链反应的可能性。在CO的系统中，建议使用量子产量高于1.0的量子。因此，在该项目中研究了VUV激光化学以及激光分解化学。（1）光化学甲醛和甲烷是甲醛和甲烷的，并且检测到少量的酒精。在同一压力下，H_2和CO系统的H_2的40.5MPa下的收率为1.5％，CO_2的收率为26.6kpa，而CO_2的收率为20％。提出了一种链反应机制。（2）激光分解相似的光产品是从H_2的气体混合物中获得的，由激光诱导的等离子体获得了CO_2或CO。（3）CO_2的光泽和氧化的氧化和氧化的氧化氢氟化碳纤维的氧化。根据热酒精的形成及其碰撞弛豫，讨论了反应机制。2。光学元素VUV和紫外线激光消融的表面处理已应用于光学平坦元件的处理。 PMMA，玻璃等