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Generation of Multicharged Krypton Ions in Nanosecond Laser Ionization of Krypton Beam
Luo Xiaolin,Kong Xianglei,Niu Dongmei,Qu Hongbo,Li Haiyang*
Author NameAffiliationE-mail
Luo Xiaolin Anhui Institute of Optics and Fine MechanicsChinese Academy of SciencesHefei 230031  
Kong Xianglei Anhui Institute of Optics and Fine MechanicsChinese Academy of SciencesHefei 230031  
Niu Dongmei Anhui Institute of Optics and Fine MechanicsChinese Academy of SciencesHefei 230031  
Qu Hongbo Anhui Institute of Optics and Fine MechanicsChinese Academy of SciencesHefei 230031  
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:
Up to Kr17 + multicharged krypton ions have been observed in time-of-flight mass spectrum by a 25 ns Nd-YAG 1. 064 μm laser at laser intensity about 1012 W/ cm2 . Experimental results indicate that the multicharged ions appear only when the laser interacts with the middle part of the pulsed beam,and the intensities of the multicharged ions increase dramatically by increasing the backing pressure of Kr gas,which indicates that the clusters in the beam is essential to the production of multicharged ions. From the experimental results,it is concluded that the cluster is ionized via multiphoton ionization and forms a nanoplasma ball,which can absorb the laser resonantly to further ionize the single charge ion to the high charge state.
Key words:  Krypton,Nanosecond laser,Multicharged ions,Time-of-flight mass spectrum
FundProject:
纳秒激光电离产生Kr17 + 的研究
罗晓琳a,孔祥蕾a,牛冬梅a,渠洪波a,李海洋*
摘要:
关键词:    纳秒激光  高价离子  飞行时间质谱
DOI:10.1088/1674-0068/17/1/4-6
分类号: