Interactions of a Femtosecond Intense Laser with Rare Gas Clusters in a Dense Jet
Author(s): LI Shaohui, WANG Cheng, LIU Jiansheng, ZHU Pinpin, WANG Xiangxin, NI Guoquan, LI Ruxin, XU Zhizhan
Pages: 2684-2686
Year: 2005 Issue: 1
Journal: PLASMA SCIENCE AND TECHNOLOGY
Keyword: atomic clusters; femtosecond laser; energy absorption; high energy ions;
Abstract: A study on the interactions of high intensity (～ 1016 W/cm2) femtosecond laser pulses with rare gas clusters in a dense jet is performed. Energy absorption by Ar and Xe clusters is measured and it can be as high as 90%. Very energetic ions produced in the laser interaction with a dense cluster jet are detected by time-of-flight spectrometry and the maximum ion energy of Xe is up to 1.3 MeV. The average ion energies a1e found to increase with increasing cluster size and get saturated gradually. The average ion energies also show a strong directionality and the average ion energy in the direction parallel to the laser polarization vector is 40% higher than that perpendicular to it. The findings are discussed in terms of a model of charge-dependent ion acceleration.
Pages: 2684-2686
Year: 2005 Issue: 1
Journal: PLASMA SCIENCE AND TECHNOLOGY
Keyword: atomic clusters; femtosecond laser; energy absorption; high energy ions;
Abstract: A study on the interactions of high intensity (～ 1016 W/cm2) femtosecond laser pulses with rare gas clusters in a dense jet is performed. Energy absorption by Ar and Xe clusters is measured and it can be as high as 90%. Very energetic ions produced in the laser interaction with a dense cluster jet are detected by time-of-flight spectrometry and the maximum ion energy of Xe is up to 1.3 MeV. The average ion energies a1e found to increase with increasing cluster size and get saturated gradually. The average ion energies also show a strong directionality and the average ion energy in the direction parallel to the laser polarization vector is 40% higher than that perpendicular to it. The findings are discussed in terms of a model of charge-dependent ion acceleration.
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