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Chin. Phys. B, 2008, Vol. 17(4): 1237-1241    DOI: 10.1088/1674-1056/17/4/015
ATOMIC AND MOLECULAR PHYSICS Prev   Next  

Coulomb expansion of deuterated methane clusters irradiated by an ultrashort intense laser pulse

Li Hong-Yu(李洪玉), Liu Jian-Sheng(刘建胜), Wang Cheng(王成), Ni Guo-Quan(倪国权), Li Ru-Xin(李儒新), and Xu Zhi-Zhan(徐至展)
State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
Abstract  The simulations of three-dimensional particle dynamics show that when irradiated by an ultrashort intense laser pulse, the deuterated methane cluster expands and the majority of deuterons overrun the more slowly expanding carbon ions, resulting in the creation of two separated subclusters. The enhanced deuteron kinetic energy and a narrow peak around the energy maximum in the deuteron energy distribution make a considerable contribution to the efficiency of nuclear fusion compared with the case of homonuclear deuterium clusters. With the intense laser irradiation, the nuclear fusion yield increases with the increase of the cluster size, so that deuterated heteronuclear clusters with larger sizes are required to achieve a greater neutron yield.
Keywords:  deuterated methane cluster      ultrashort intense laser pulse      Coulomb explosion      nuclear fusion  
Received:  13 July 2007      Revised:  19 October 2007      Accepted manuscript online: 
PACS:  36.40.Jn (Reactivity of clusters)  
  36.40.Sx (Diffusion and dynamics of clusters)  
  42.65.Re (Ultrafast processes; optical pulse generation and pulse compression)  
  61.80.Ba (Ultraviolet, visible, and infrared radiation effects (including laser radiation))  
Fund: Project supported by the National Natural Science Foundation of China (Grant Nos 10535070 and 10674145), the National Basic Research Program of China (Grant No 2006CB806000), and the Shanghai Supercomputer Center (SSC).

Cite this article: 

Li Hong-Yu(李洪玉), Liu Jian-Sheng(刘建胜), Wang Cheng(王成), Ni Guo-Quan(倪国权), Li Ru-Xin(李儒新), and Xu Zhi-Zhan(徐至展) Coulomb expansion of deuterated methane clusters irradiated by an ultrashort intense laser pulse 2008 Chin. Phys. B 17 1237

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