Coulomb expansion of deuterated methane clusters irradiated by an ultrashort intense laser pulse |
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Authors: | Li Hong-Yu Liu Jian-Sheng Wang Cheng Ni Guo-Quan Li Ru-Xin and Xu Zhi-Zhan |
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Institution: | State Key Laboratory of High Field Laser Physics, Shanghai
Institute of Optics and Fine Mechanics, Chinese Academy of
Sciences, Shanghai 201800, China |
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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. |
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Keywords: | deuterated methane cluster ultrashort intense laser pulse Coulomb explosion nuclear
fusion |
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