| Deuterium cluster jet produced at moderate backing pressures |
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| 作者姓名： | 王红斌 葛芳芳 刘红杰 倪国权 杨向东 谷渝秋 温贤伦 周维民 王光昶 温天舒 何颖玲 焦春晔 张双根 王向贤 |
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| 作者单位： | Institute of Atomic and Molecular Physics Sichuan University，Chengdu 610064 Research Center of Laser Fusion，China Academy of Engineering Physics，Mianyang 621900，Department of Science，Chongqing University，Chongqing 400044 Research Center of Laser Fusion，China Academy of Engineering Physics，Mianyang 621900，Research Center of Laser Fusion，China Academy of Engineering Physics，Mianyang 621900，State Key Laboratory of High Field Laser Physics，Shanghai Institute of Optics and Fine Mechanics，Chinese Academy of Sciences，Shanghai 201800，Institute of Atomic and Molecular Physics，Sichuan University，Chengdu 610064，Research Center of Laser Fusion，China Academy of Engineering Physics，Mianyang 621900，Research Center of Laser Fusion，China Academy of Engineering Physics，Mianyang 621900，Research Center of Laser Fusion，China Academy of Engineering Physics，Mianyang 621900，Institute of Atomic and Molecular Physics，Sichuan University，Chengdu 610064 Research Center of Laser Fusion，China Academy of Engineering Physics，Mianyang 621900，Research Center of Laser Fusion，China Academy of Engineering Physics，Mianyang 621900，Research Center of Laser Fusion，China Academy of Engineering Physics，Mianyang 621900，Research Center of Laser Fusion，China Academy of Engineering Physics，Mianyang 621900，Institute of Atomic and Molecular Physics，Sichuan University，Chengdu 610064 Research Center of Laser Fusion，China Academy of Engineering Physics，Mianyang 621900，Institute of Atomic and Molecular Physics，Sichuan University，Chengdu 610064 Research Center of Laser Fusion，China Academy of Engineering Physics，Mianyang 621900 |
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| 基金项目： | This work was supported by the Key Foundation of China Academy of Engineering Physics (No. 2000Z0206)
the National Natural Science Foundation of China (No. 10265057). |
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| 摘 要： | A deuterium cluster jet produced in the supersonic expansion into vacuum of deuterium gas at liquid nitrogen temperature and moderate backing pressures are studied by Rayleigh scattering techniques. The experimental results show that deuterium clusters can be created at moderate gas backing pressures ranging from 8 to 23 bar, and a maximum average cluster size of 350 atoms per cluster is estimated. The temporal evolution of the cluster jet generated at the backing pressure of 20 bar demonstrates a two-plateau structure. The possible mechanism responsible for this structure is discussed. The former plateau with higher average atom and cluster densities is more suitable for the general laser-cluster interaction experiments.
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