乙酸甲酯在强激光场下的电离  

Ionization of Methyl Acetate in Ultra-intense Laser Field

作　　者：熊轶嘉[1] 吴成印[1] 高振[1] 孔繁敖[1] 杨晓东[2] 陆海鹤 徐至展[2] 

机构地区：[1]中国科学院化学研究所分子反应动力学国家重点实验室,北京100080 [2]中国科学院上海光机所强光光学开放研究实验室,上海201800

出　　处：《物理化学学报》2000年第10期932-935,共4页Acta Physico-Chimica Sinica

基　　金：国家自然科学基金;国家重点基础研究专项基金资助项目

摘　　要：The tunneling ionization of methyl acetate in the laser intensity range of 4.8× 1013 W· cm－ 2 to 1.3× 1014 W· cm－ 2 was studied.The modified Keldysh parameter was calculated by the ab initio method.The tunneling probability was calculated by the WKB method.When the laser intensity was larger than 1014 W· cm－ 2,methyl acetate mainly took tunneling ionization mechanism.When the laser intensity was lower than 1014 W· cm－ 2 multiphoton ionization occurred.The tunneling ionization of methyl acetate in the laser intensity range of 4.8× 1013 W· cm－ 2 to 1.3× 1014 W· cm－ 2 was studied.The modified Keldysh parameter was calculated by the ab initio method.The tunneling probability was calculated by the WKB method.When the laser intensity was larger than 1014 W· cm－ 2,methyl acetate mainly took tunneling ionization mechanism.When the laser intensity was lower than 1014 W· cm－ 2 multiphoton ionization occurred.

关 键 词：乙酸甲酯 飞秒激光 隧道电离 Keldysh因子 

分 类 号：O623[理学—有机化学]