引用本文:
【打印本页】   【HTML】   【下载PDF全文】   View/Add Comment  【EndNote】   【RefMan】   【BibTex】
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览 1021次   下载 1380 本文二维码信息
码上扫一扫!
分享到: 微信 更多
Generation of Multi-charged Ions in Laser-induced Ionization of Furan under Intense Nanosecond Laser Fields
Kong Xianglei,Niu Dongmei,Luo Xiaolin,Zhang Xianyi,Zhang Shudong,Kan Ruifeng,Li Haiyang
Author NameAffiliationE-mail
Kong Xianglei Laboratory of Environmental Spectroscopy, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031  
Niu Dongmei Laboratory of Environmental Spectroscopy, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031  
Luo Xiaolin Laboratory of Environmental Spectroscopy, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031  
Zhang Xianyi Laboratory of Environmental Spectroscopy, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031  
Zhang Shudong Laboratory of Environmental Spectroscopy, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031  
Kan Ruifeng Laboratory of Environmental Spectroscopy, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031  
Li Haiyang Laboratory of Environmental Spectroscopy, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031 hli@aiofm.ac.cn  
Abstract:
The photo ionization of furan by an intense 25 ns Nd:YAG 532 nm laser has been studied by time-of-flight mass spectrometry. At the laser intensity of 1010~1011 W/cm2, multi-charged ions Can+ (n=2~4) and Ohm+ (m=2~3) appeared in the mass spectra when argon was used as the carrier gas. From the peak splitting and the numeric analysis, the most probable kinetic energies of C2+, C3+ and C4+ were confirmed to be 21、63 and 100 eV respectively, and the most probable kinetic energies of O2+ and O3+ were confirmed to be 20 and 40 eV respectively. It is proposed that the multi-charged ions come from the Coulomb explosion of furan cluster ions produced by multi photon ionization of neutral furan cluster.
Key words:  Furan, Coulomb explosion, Multi-charged ions, Nanosecond lase
FundProject:
纳秒强光场下呋喃的激光电离中高价离子的产生
孔祥蕾,牛冬梅,罗晓琳,张先燚,张树东,阚瑞峰,李海洋*
摘要:
利用25 ns脉冲Nd:YAG 532 nm的激光,在1011 W/cm2的光场强度下,用飞行时间质谱对不同条件下呋喃的激光电离过程进行了研究.当利用氩作为载气时,首次观察到了较强的Cn+(n=2~4)和Om+(m=2~3)离子信号.通过测定峰分裂和数值模拟计算的方法可以确定其中C2+、 C3+ 和C4+的最可几平动能分别为21、 63和100 eV, O2+ 和O3+的最可几平动能分别为20和40 eV.质谱峰型的分裂现象和激光延迟实验结果表明,这些高价离子可能来源于呋喃团簇的库仑爆炸过程.
关键词:  呋喃  库仑爆炸  高价离子  纳秒激光
DOI:10.1088/1674-0068/17/5/513-517
分类号: