高气压激光介质He^＋2与N2电荷转移速率系数的测量

Measurement of Charge-Transfer Rate Coefficients of He_2￣+ with N_2 in High-Pressure Laser Media

本文报导采用快脉冲放电系统首次在气压１２０－６２７ｋＰａ放电余辉期对与Ｎ２电荷转移速率系数的测量。测量得到的由两体与三体速率系数组合成的有效速率系数随气压增加而线性增加，实验中未出现饱和迹象。这意味着三体反应将使总的反应速率大大加快。这个结果对发展高气压气体激光器可能起重要作用。

This work reports the measurement of charge-transfer rate coefficients of with N2 by fast pulsed electric discharge system at a pressure of 120-627kpa afterglow for the first time. The effective rate coefficient which is the combination of both two-body and three body rate coefficients was measured to be a linear increase with an increase of the gas pressures. No evidence of saturation was found in our experiment. It means that the three-body reaction will strongly accelerate the total rate of reaction. This result may play an important role in the development of high pressure gas lasers.