摘要
本研究工作主要采用超声分子束、飞秒激光与飞行时间(TOF)质谱等实验技术相结合的方法研究了N_2和O_2分子在飞秒强激光场作用下的光电离.通过分析N_2和O_2分子的飞行时间质谱及碎片离子产额,得到了离子产额的激光强度依赖关系、激光极化效应和偏振度效应,并结合强场理论知识对光电离机制进行了细致地分析.
In this work, the experimental techniques of supersonic molecular beam, femtosecond laser and time-offflight （TOF） mass spectrometry were applied to investigate the photoionizations of nitrogen and oxygen molecules under intense femtosecond laser field. By way of analyzing the TOF mass spectra and yields of fragment ions, we got the dependence of ions on the laser intensity, laser ellipticity and the laser polarizations. In combination with intense field theory, we analyzed the photoionization mechanism in detail.
作者
张科
余海军
郑贤锋
崔执凤
ZHANG Ke;YU Hai-Jun;ZHENG Xian-Feng;CUI Zhi-Feng(School of Electronic Engineering, Huainan Normal University,Huainan 232001, China;College of Physics and Electrical Information, Anhui Normal University, Wuhu 241000, China)
出处
《四川大学学报（自然科学版）》
CAS
CSCD
北大核心
2017年第6期1229-1238,共10页
Journal of Sichuan University(Natural Science Edition)
基金
安徽高校自然科学研究重点项目(KJ2014A236)
关键词
强场
光电离
飞行时间质谱
氮气
氧气
Intense field
Photoionization
Time-of-flight mass spectrometry
Nitrogen
Oxygen
