本文利用Polaroid高速感光底片在一次实验中成功地拍摄到氢燃烧转变为爆轰(DDT)的光谱;利用光电技术研究了氢燃烧转变为爆轰过程中OH基(0.3064μm,0.3428μm)的变化过程.研究表明:在氢燃烧转变为爆轰过程中OH基是逐渐增大的,出现爆轰时OH基出现明显增长;OH(0,0)辐射早于O_2(0,14)辐射,它说明O_2在链式反应中能量比较低,它只有和自由原子和自由基相互碰撞获取高的能量而被激发. In this paper, Polaroid high-speed photographic film was used to successfully capture the spectrum of hydrogen combustion to detonation (DDT) in an experiment. The change of hydrogen radicals (0.3064μm, 0.3428μm) during hydrogen combustion to detonation was studied by using photoelectric technology. The results show that the OH groups increase gradually during the transition from hydrogen combustion to detonation, and the OH groups increase obviously when detonation occurs. The emission of OH (0,0) is earlier than that of O_2 (0,14) O 2 in the chain reaction shows that the energy is relatively low, it only free atoms and free radicals collide to obtain high energy and be excited.