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 meth...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.展开更多
文摘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.
