摘要
为了探究含能材料在紫外激光辐照下的烧蚀特点及规律,采用光学显微镜、扫描电子显微镜以及微粒计数器等表征手段,分别对不同质量、不同厚度的黑索今(research department explosive,RDX)含能材料在紫外激光(波长为355 nm)辐照下的烧蚀尺寸、烧蚀形貌以及冲击波引起的材料喷溅等特性进行表征与统计。研究结果表明,随着入射激光能量密度的不断增大,含能材料的横向烧蚀面积和纵向烧蚀深度均先增大后减小,且最终烧蚀面积保持在光斑面积大小,烧蚀深度保持在60μm左右;对于激光烧蚀诱导的含能材料微粒喷溅,中尺寸的微粒数量呈现先增多后减少的趋势,而大尺寸的微粒数量却一直减少。与大光斑激光辐照相比较,在相同能量密度下,小光斑辐照时的横向烧蚀面积更小,烧蚀致微粒喷溅的作用更强。
To explore the ablation characteristics and laws of energetic materials under ultraviolet laser irradiation,our study uses characterization methods,including optical microscope,scanning electron microscope,and particle counter to characterize the ablation size,ablation morphology,and material splash of RDX energetic materials caused by shock wave under ultraviolet laser(the wavelength:355 nm)irradiation.The results show that as the incident laser fluence increases,the lateral ablation area and longitudinal ablation depth of the energetic materials firstly increase and then decrease,and the final ablation area remains at the size of the spot area,and the ablation depth remains about 60μm;for laser ablation-induced energetic material particle splash,the number of medium-sized particles increases firstly and then decreases,while the number of large-sized particles has been decreasing.Compared with laser irradiation with a larger spot,the lateral ablation area under irradiation with a small spot is smaller and the effect of laser ablation particle splash is stronger under the same fluence.
作者
晏中华
孟倪冰
徐灿
陈朝锐
崔巍
向霞
祖小涛
袁晓东
谭碧生
黄明
YAN Zhonghua;MENG Nibing;XU Can;CHEN Chaorui;CUI Wei;XIANG Xia;ZU Xiaotao;YUAN Xiaodong;TAN Bisheng;HUANG Ming(School of Optoelectronic Engineering,Chongqing University of Posts and Telecommunications,Chongqing 400065,P.R.China;School of Physics,University of Electronic Science and Technology of China,Chengdu 610054,P.R.China;Research Center of Laser Fusion,China Academy of Engineering Physics,Mianyang 621900,P.R.China;Institute of Chemical Materials,China Academy of Engineering Physics,Mianyang 621900,P.R.China)
出处
《重庆邮电大学学报（自然科学版）》
CSCD
北大核心
2023年第2期377-382,共6页
Journal of Chongqing University of Posts and Telecommunications(Natural Science Edition)
基金
国家自然科学基金(12204082)
重庆市教委科学技术研究项目(KJQN201800623,KJQN201800626)。
关键词
紫外激光
RDX含能材料
激光烧蚀
微粒特征
ultraviolet laser
RDX energetic materials
laser ablation
micro-particle characteristics
