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Wavelength Dependence of Production of Multicharged Carbon Ions in Nanosecond Intense Laser Ionization of Seeded Benzene Beam
Niu Dongmei,Liang Feng,Luo Xiaolin,Wen Lihua,Zhang Xixian,Li Haiyang*
Author NameAffiliationE-mail
Niu Dongmei Anhui Institute of Optics and Fine MechanicsChinese Academy of SciencesHefei 230031 Graduate School of the Chinese Academy of SciencesBeijing 100039  
Liang Feng Anhui Institute of Optics and Fine MechanicsChinese Academy of SciencesHefei 230031 Graduate School of the Chinese Academy of SciencesBeijing 100039  
Luo Xiaolin Anhui Institute of Optics and Fine MechanicsChinese Academy of SciencesHefei 230031 Graduate School of the Chinese Academy of SciencesBeijing 100039  
Wen Lihua Anhui Institute of Optics and Fine MechanicsChinese Academy of SciencesHefei 230031 Graduate School of the Chinese Academy of SciencesBeijing 100039  
Zhang Xixian Anhui Institute of Optics and Fine MechanicsChinese Academy of SciencesHefei 230031 Graduate School of the Chinese Academy of SciencesBeijing 100039  
Li Haiyang* Anhui Institute of Optics and Fine MechanicsChinese Academy of SciencesHefei 230031Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023 hli@aiofm.ac.cn 
Abstract:
The photoionization of seeded benzene beam by 25 ns laser pulse at wavelengths of 266,355 and 1064 nm has been studied by the time-of-flight mass spectrometry. The observed mass spectra at 266 nm and 355 nm at intensities of 1010-1011 W/cm2 indicate a multiphoton ionization and dissociation(MPID)process,in which C+,C2Hx+,C3Hx+,C4Hx+ and C6H6+ are main products. While at 1064 nm laser of similar intensities,the domain ion is C4+ which is produced from Coulomb explosion. The longer wavelength facilities the energy absorption rate during inverse bremsstrahlung,which leads to the resulting wavelength dependence of the multicharged atomic ions.
Key words:  Benzene,Coulomb explosion,Multicharged atomic ions,Time of flight mass spectrometry
FundProject:
纳秒强激光电离苯产生高价碳离子的波长效应
牛冬梅,梁峰,罗晓琳,温丽华,张西咸,李海洋*
摘要:
关键词:    库仑爆炸  高价原子离子  飞行时间质谱
DOI:10.1088/1674-0068/17/4/375-377
分类号: