摘要
在钾蒸气中用双光子共振三光子电离法测出了钾原子６Ｓ态的电离流随时间的衰减曲线。由电离流和多光子动力学参数的关系计算了６Ｓ态的光电离截面。当用７６６．４ ｎｍ 和７６９．８ ｎｍ 单光子激发时， 通过能量积聚效应也可诱导钾原子得以电离。
By two photon resonant three photon ionization in atomic potassium, the ion current decay curve was measured. From the relation between ion current and multi photon dynamic parameter, photo ionization cross section of 6S state in atomic potassium was determined. When excited with one photon at 766.4 nm and 769.8 nm, the atomic potassium was ionized by energy pooling effect.
出处
《光学学报》
EI
CAS
CSCD
北大核心
1999年第12期1604-1607,共4页
Acta Optica Sinica
基金
国家自然科学基金
山西省自然科学基金
关键词
双光子共振三光子电离
光电离截面
钾原子
two photon resonant three photon ionization, photon ionization cross section, energy pooling effect.
