Measurement of ionic energy from femtosecond laser-heated argon clustersProject supported by the National "Climb" Program of China, the National Natural Science Foundation of China (Grant No. 29890210) and the Major Project for the Foundation Research of the Chinese Academy of Sciences (Grant No. KJ 951-B1-701).
Lei An-le; Li Zhong; Ni Guo-quan; Xu Zhi-zhan; Lei An-le; Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China; Li Zhong; Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China; Ni Guo-quan; Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China; Xu Zhi-zhan; Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
Журнал:
Chinese Physics
Дата:
2000-06-01
Аннотация:
The high backing pressure argon gases adiabatically expand into vacuum through a pulsed gas jet to nucleate into large clusters. The clusters were heated by a 45fs, 2.3×10<sup>16</sup> Wcm<sup>-2</sup> Ti: sapphire laser. The high energy of the ions produced in the cluster explosion was measured using time-of-flight spectrometry. The maximum and average kinetic energy of the ions were 0.2MeV and ~12.5keV, respectively, indicating that the femtosecond laser interactions with argon clusters are more energetic than interactions with atoms and molecules.
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