瞬态空气等离子体场的全息术研究

RESEARCH ON INSTANTANEOUS AIR PLASMA FIELD WITH HOLOGRAPHIC INTERFEROMETRY

采用双波长双脉冲激光全息术,对有激波存在下的空气放电现象进行了研究。建立了双波长电弧折射率场方程,推导出冲击波区的压强同折射率之间的关系式,得出电弧场的压强分布.曲线及等离子体区的温度分布和电子、离子、原子、分子等粒子的数密度分布。

This thesis adopted two-wavelength double pulses laser holographic interferometry to study the air discharge in a shock wave field. The arc refractive field equations about two-wavelength were founded. An approximate formula about the relation between the refractive index and pressure in shock region was derived. And the distributions of temperature, number density of electrons, ions, atoms and molecules in air plasma and the pressure distribution about the whole arc field were obtained.