【摘要】 本文报道用脉冲光电流效应对Hg原子在低压放电中亚稳态6³P_0.2和第一共振态6³P₁衰减机制的研究。指出亚稳态原子间的碰撞电离、再复合及二极扩散过程是这种缓慢衰减的主要因素。实验测定了在不同温度下6³P_0,1,2态的平均有效寿命及扩散系数。实验结果与理论计算相符。由于6³P_0,1,2态在Hg放电中的关键作用,这种灵敏、简便和干扰小的方法有重要的实际意义。更多还原

【Abstract】 An optogalvanic spectroscopy method for study of atomic mercury metastable level is reported. The experiments are described in which the mercury discharge was irradiated with a dye laser at 577 nm and 579 nm, thus exciting the atoms from the 6¹P₁ level to 6³D level, which decays to the 6³P levels. By measuring the time dependence of the optogalvanic and fluore-sence signals, the effective lifetime and the ambipolar diffusion coefficients were obtained. The theoretical explanation for the experiments is presented.更多还原