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.
Received: 13 July 2007
Revised: 19 October 2007
Accepted manuscript online:
(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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