超高速碰撞产生的闪光现象是物质在强动载作用下的物态转变，涉及材料动力学、固体物理、高压物理、原子分子物理等学科领域，在导弹拦截、天体物理及深空探测领域具有重要的应用价值。本项目以LY12铝及白云石板靶为研究对象，通过实验研究、理论分析和数值计算，系统研究超高速碰撞产生闪光的物理机制。重点建立闪光强度测量的光纤瞬态高温计测量系统、确定弹靶材料物质组分的光谱测量系统；通过光纤瞬态高温计测量系统得到的原始数据结合标定，获得碰撞LY12铝及白云石板在不同实验参数条件下产生闪光强度的变化规律，揭示辐射温度演化特征模型；利用光谱测量系统确定弹靶材料的物质组分；阐明冲击波能、剩余比内能与闪光能量的关系，综合考虑碰撞过程的多种热传输方式和射流、摩擦剪切热等附加热机制。该项目的研究成果将为导弹拦截、天体物理及深空探测提供有价值的参考，获得的碰撞闪光规律性认识，必将为其他材料超高速碰撞产生闪光的研究奠定基础。

Light flash phenomena generated by hypervelocity impact is phase transition of the matter under intense dynamic loading,involving in dynamic behavior of materials, solid state physics , high pressure physics, and atomic & molecular physics. It has important application values in the fields of missile intercept, astrophysics and deep space exploration. LY12 aluminum and dolomite plate targets will be the object of study in this project. Physical mechanism of light flash produced by hypervelocity impact will be studied by experimental study, theoritical analysis and numerical simulation. Optical fiber measurement system of transient pyrometer for light flash intensity measurement and transient spectral measuring system for projectile and target material components determination will be confirmed as vital contents； Rules of light flash intensity for impacting LY12 aluminum and dolomite plate in different experimental paratermeters will be obtained through the originally experimental data from optical fiber transient pyrometer measurement system in combination with calibration ,which evolutionary characteristic models of radiant temperature will be revealed；Matter components of projectile and target will be deterimened by transient spectral measuring system； The relationships of shock wave energy,residual specific internal energy and light flash energy will be elucidated, which involving a variety of heat transmission patterns and additional heat mechanisms ,such as jet and friction shear heat ,et al.The research achievement of the project obtained will provide valuable references for missle intercept, astrophysics and deep space exploration. Regularities acquired from impacting light flash in this project will also lay a foundation for light flash generated during hypervelocity impact other materials.