等离子体科学和技术（英文版）
等離子體科學和技術（英文版）
등리자체과학화기술（영문판）
PLASMA SCIENCE & TECHNOLOGY
2005年
1期
2684-2686
,共3页
李邵辉%王成%刘建胜%朱频频%王向欣%倪国权%李儒新%徐至展
李邵輝%王成%劉建勝%硃頻頻%王嚮訢%倪國權%李儒新%徐至展
리소휘%왕성%류건성%주빈빈%왕향흔%예국권%리유신%서지전
atomic clusters%femtosecond laser%energy absorption%high energy ions
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.
