【摘要】 本文介绍一种用于脉冲激光激励空心阴极放电光电流效应的改进的表象理论,它以原子的能级集居数及电子密度变化的速率方程为基础,考虑到放电管内电子运动及电流回路方程获得了一组方程。该方程组很好地解决了脉冲光电流信号随电流、电压及激光光强的变化关系及时间特性(这一理沦提出了利用脉冲光电流效应测量某些低压气体等离子体参数的可能性)。更多还原

【Abstract】 An improved simple phenomenological theory of the optogalvanio effect in the hollow cathode lamp exciting by a pulsed laser is presented. A set of equations was obtained based on the population of the atomic levels and the rate equation of the electron density change and considering the electron movement in the discharge tube and the current circuit equation. The dependence of optogalvanic signal on current and pressure of buffer gas and laser intensity and its temporal behavior are predicted by those equations. According to this theory, it is possible to measure the same plasma parameters in low pressure gas by using pulse optogalvanic effect.更多还原