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Overrun phenomenon and neutron yield in Coulomb explosion of deuterated alkane clusters driven by intense laser field |
| Hong-Yu Li(李洪玉), Mei-Dong Huang(黄美东), Ming Kang(康明), De-Jun Li(李德军) |
| College of Physics and Materials Science, Tianjin Normal University, Tianjin 300387, China |
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Abstract By using a simplified Coulomb explosion model, the laser-driven Coulomb explosion processes of three deuterated alkane clusters, i.e., deuterated methane (CD4)N, ethane (C2D6)N and propane (C3D8)N clusters are simulated numerically. The overrun phenomenon that the deuterons overtake the carbon ions inside the expanding clusters, as well as the dependence of the energetic deuterons and fusion neutron yield on cluster size, is discussed in detail. Researches show that the average kinetic energy of deuterons and neutron yield generated in the Coulomb explosion of (C2D6)N cluster are higher than those of (CD4)N cluster with the same size, in qualitative agreement with the reported conclusions from the experiments of (C2H6)N and (CH4) N clusters. It is indicated that (C2D6)N clusters are superior to (CD4)N clusters as a target for the laser-induced nuclear fusion reaction to achieve a higher neutron yield. In addition, by comparing the relevant data of (C3D8)N cluster with those of (C2D6)N cluster with the same size, it is theoretically concluded that (C3D8)N clusters with a larger competitive parameter might be a potential candidate for improving neutron generation. This will provide a theoretical basis for target selection in developing experimental schemes on laser-driven nuclear fusion in the future.
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Received: 26 January 2018
Revised: 03 April 2018
Accepted manuscript online:
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PACS:
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36.40.Wa
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(Charged clusters)
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52.50.Jm
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(Plasma production and heating by laser beams (laser-foil, laser-cluster, etc.))
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52.38.Kd
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(Laser-plasma acceleration of electrons and ions)
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25.45.-z
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(2H-induced reactions)
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| Fund: Project supported by the National Natural Science Foundation of China (Grant No.11005080). |
Corresponding Authors:
Hong-Yu Li
E-mail: wlxylhy@mail.tjnu.edu.cn
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Cite this article:
Hong-Yu Li(李洪玉), Mei-Dong Huang(黄美东), Ming Kang(康明), De-Jun Li(李德军) Overrun phenomenon and neutron yield in Coulomb explosion of deuterated alkane clusters driven by intense laser field 2018 Chin. Phys. B 27 063602
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