【摘要】 研究了以TEA CO₂单脉冲激光辐照在Pt-Rh（10％）等金属表面上引发的NH₃+O₂复相爆燃反应。Pt-Rh等表面的存在明显地降低了引爆反应所需的激光功率密度。该反应的引爆阈值与激光的频率、不同的金属表面和处理方法、以及NH₃+O₂混合气体的总压力和分压比都有关。此外,还测定了该爆燃反应所产生的化学发光光谱,并讨论了反应机理。更多还原

【Abstract】 The deflagration of ammonia and oxygen on Pt-Rh（10%）and other metallic catalysts initiated by a single pulse from TEA CO₂ laser is reported. The laser power threshold for initiating deflagration on catalyst is lower than that in the homogeneous gas system. The laser ignition threshold depends on the laser frequency, different metals used as the catalysts, the total pressure of gas mixtures and the ratio of partial pressure of NH₃ and O₂. An intense yellowish chemiluminescence is observed after a single laser pulse. The mechanism of the reaction is discussed.更多还原