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从辐射热力学的观点,即能量观点,研究光的吸收和发射,则在热平衡的情况下,引出温度概念。热平衡时的辐射称为温度辐射。温度是辐射热力学的一个宏观参。另一方面,物体发射和吸收能量是分子和原子的运动状态发生变化的结果,温度描述了物体内部分子、原子微观运动状态的统计规律。测温,在光源研制,等离子体物理,炸药爆轰机理,动载下物质性态的研究等方面,都具有重要意义。我们知道,凝聚体受冲击压缩后的温度,通常是通过测冲击波的速度和波后粒子速度后,再代入用理论模型建立的状态方程,间接求出。如果能直接测出温度参量,则不仅可以检验理论模型的正确性,而且可利用所测温度数据直接建立状态方程,这是实验工作者感兴趣的事情。
From the radiation thermodynamic point of view, the energy point of view, the study of light absorption and emission, then in the case of thermal equilibrium, leads to the concept of temperature. Radiation at thermal equilibrium is called temperature radiation. Temperature is a macro parameter of radiation thermodynamics. On the other hand, the energy emitted and absorbed by the object is the result of the change of the motion state of the molecule and the atom. The temperature describes the statistical rule of the microscopic movement of atoms and atoms in the object. Temperature measurement is of great significance in light source development, plasma physics, explosive detonation mechanism, and research on the physical properties under dynamic loading. We know that the condensation of the impact compression temperature, usually by measuring the velocity of the shock wave and wave particle velocity, and then substituted into the theoretical model to establish the equation of state, indirectly. If the temperature parameter can be directly measured, not only the correctness of the theoretical model can be tested, but also the equation of state can be directly established by using the measured temperature data. This is something that the experimentalists are interested in.