Abstract 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, 2.3×1016 Wcm-2 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.
Received: 04 November 1999
Published: 12 June 2005
(Ultrafast processes; optical pulse generation and pulse compression)
Fund: Project 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).
Cite this article:
Lei An-le, Li Zhong, Ni Guo-quan, Xu Zhi-zhan MEASUREMENT OF IONIC ENERGY FROM FEMTOSECOND LASER-HEATED ARGON CLUSTERS 2000 Chin. Phys. 9 432