Luo Xiaolin, Kong Xianglei, Niu Dongmei, Qu Hongbo, Li Haiyang. Generation of Multicharged Krypton Ions in Nanosecond Laser Ionization of Krypton Beam[J]. Chinese Journal of Chemical Physics , 2004, 17(1): 4-6. doi: 10.1088/1674-0068/17/1/4-6
Citation: Luo Xiaolin, Kong Xianglei, Niu Dongmei, Qu Hongbo, Li Haiyang. Generation of Multicharged Krypton Ions in Nanosecond Laser Ionization of Krypton Beam[J]. Chinese Journal of Chemical Physics , 2004, 17(1): 4-6. doi: 10.1088/1674-0068/17/1/4-6

Generation of Multicharged Krypton Ions in Nanosecond Laser Ionization of Krypton Beam

doi: 10.1088/1674-0068/17/1/4-6
Funds:  Project supported by the National Natural Science Foundation of China(20073042)and the Grant 863 Program of China (2002AA649010,2001AA640302)
  • Received Date: 2003-11-18
  • 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.
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    沈阳化工大学材料科学与工程学院 沈阳 110142

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Generation of Multicharged Krypton Ions in Nanosecond Laser Ionization of Krypton Beam

doi: 10.1088/1674-0068/17/1/4-6
Funds:  Project supported by the National Natural Science Foundation of China(20073042)and the Grant 863 Program of China (2002AA649010,2001AA640302)

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.

Luo Xiaolin, Kong Xianglei, Niu Dongmei, Qu Hongbo, Li Haiyang. Generation of Multicharged Krypton Ions in Nanosecond Laser Ionization of Krypton Beam[J]. Chinese Journal of Chemical Physics , 2004, 17(1): 4-6. doi: 10.1088/1674-0068/17/1/4-6
Citation: Luo Xiaolin, Kong Xianglei, Niu Dongmei, Qu Hongbo, Li Haiyang. Generation of Multicharged Krypton Ions in Nanosecond Laser Ionization of Krypton Beam[J]. Chinese Journal of Chemical Physics , 2004, 17(1): 4-6. doi: 10.1088/1674-0068/17/1/4-6

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