摘要
为了研究含铝炸药的反应过程,采用激光烧蚀手段激发了RDX基含铝炸药粉末的快速反应,并对反应过程中的发射光谱分布进行了实时监测,并基于Al O分子光谱对反应区域的瞬态温度进行了计算。结果表明,含铝炸药在前期和后期的光谱分布和反应行为存在明显区别:前期主要为RDX和空气在激光烧蚀下形成的等离子冷却和耗散过程,O/H/N元素的发射光谱在这一阶段占主导地位,其谱线高度呈指数型衰减;后期以铝的氧化反应为主,该反应具有一定自持性,对应的反应中间产物Al O分子的光谱具有持续久、非单调变化的典型特征。温度变化趋势与整个反应发展趋势紧密相关,反应较剧烈的初期温度较高,并随着反应的持续变弱而变低。
To investigate the reaction process of aluminized explosives,the rapid reaction in RDX based aluminized explosive powder was stimulated by means of laser ablation,and the emission spectrum distribution in the reaction process was monitored in real time,and the transient temperature of the reaction region was calculated based on the molecular spectrum of Al O. Results show that there are obvious differences in the spectrum distribution and reaction behavior between the early and late stages of aluminized explosives. The early stage is mainly the plasma cooling and the dissipation process of RDX and air formed under laser ablation.The emission spectrum from the O/H/N element is dominant in this stage,and its spectral line height is exponentially attenuated. The oxidation reaction of Al element is dominant in the late stage,and the reaction has a certain self-sustaining.The spectra of the corresponding intermediates Al O molecules have typical characteristics of persistent and non-monotonic changes.The trend of temperature change is closely related to the development trend of the whole reaction. The temperature of the severe reaction in the early stage is higher and decreases as the reaction continues to weaken.
作者
郭文灿
郑贤旭
张旭
赵均
刘仓理
GUO Wen-can;ZHENG Xian-xu;ZHANG Xu;ZHAO Jun;LIU Cang-li(National Key Laboratory of Shock Wave and Detonation Physics,Institute of Fluid Physics,CAEP,Mianyang 621999,China)
出处
《含能材料》
EI
CAS
CSCD
北大核心
2018年第8期671-676,共6页
Chinese Journal of Energetic Materials
基金
领域规划项目(LYGH201401)
关键词
含铝炸药
发射光谱
温度测量
激光烧蚀
aluminized explosive
emission spectra
temperature measurement
laser ablation.
