Overrun phenomenon and neutron yield in Coulomb explosion of deuterated alkane clusters driven by intense laser field

doi:10.1088/1674-1056/27/6/063602

中国物理B ›› 2018, Vol. 27 ›› Issue (6): 63602-063602.doi: 10.1088/1674-1056/27/6/063602

• ATOMIC AND MOLECULAR PHYSICS • 上一篇下一篇

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

收稿日期:2018-01-26 修回日期:2018-04-03 出版日期:2018-06-05 发布日期:2018-06-05
通讯作者: Hong-Yu Li E-mail:wlxylhy@mail.tjnu.edu.cn
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No.11005080).

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

Received:2018-01-26 Revised:2018-04-03 Online:2018-06-05 Published:2018-06-05
Contact: Hong-Yu Li E-mail:wlxylhy@mail.tjnu.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No.11005080).

摘要/Abstract

摘要： 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.

关键词: deuterated alkane cluster, Coulomb explosion, deuteron kinetic energy, neutron yield

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.

Key words: deuterated alkane cluster, Coulomb explosion, deuteron kinetic energy, neutron yield

中图分类号: (Charged clusters)

36.40.Wa

52.50.Jm (Plasma production and heating by laser beams (laser-foil, laser-cluster, etc.)) 52.38.Kd (Laser-plasma acceleration of electrons and ions) 25.45.-z (2H-induced reactions)

李洪玉, 黄美东, 康明, 李德军. Overrun phenomenon and neutron yield in Coulomb explosion of deuterated alkane clusters driven by intense laser field[J]. 中国物理B, 2018, 27(6): 63602-063602.

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[J]. Chin. Phys. B, 2018, 27(6): 63602-063602.

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Overrun phenomenon and neutron yield in Coulomb explosion of deuterated alkane clusters driven by intense laser field

Overrun phenomenon and neutron yield in Coulomb explosion of deuterated alkane clusters driven by intense laser field

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