Two-Dimensional Hybrid Model for High-Current Electron Beam Transport in a Dense Plasma

CAO Lihua(曹莉华); WANG Huan(王欢); ZHANG Hua(张华); LIU Zhanjun(刘占军); WU Junfeng(吴俊峰); LI Baiwen(李百文)

doi:10.1088/1009-0630/16/11/03

Plasma Science and Technology > 2014 > 16(11): 1007-1012. > DOI: 10.1088/1009-0630/16/11/03

CAO Lihua(曹莉华), WANG Huan(王欢), ZHANG Hua(张华), LIU Zhanjun(刘占军), WU Junfeng(吴俊峰), LI Baiwen(李百文). Two-Dimensional Hybrid Model for High-Current Electron Beam Transport in a Dense Plasma[J]. Plasma Science and Technology, 2014, 16(11): 1007-1012. DOI: 10.1088/1009-0630/16/11/03

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Two-Dimensional Hybrid Model for High-Current Electron Beam Transport in a Dense Plasma

1 Institute of Applied Physics and Computational Mathematics, Beijing 100094, China 2 HEDPS, Center for Applied Physics and Technology, Peking University, Beijing 100871, China

Funds: supported by National Natural Science Foundation of China (Nos. 11175030, 11475030, 91230205, 11175029 and 11375032), the National High-Tech ICF Committee of China, and the Science and Technology Foundation of China Academy of Engineering Physics (No. 2011A0102008)

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Received Date: March 24, 2014

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Abstract

Abstract

A two-dimensional hybrid code is developed to model the transport of a high-current electron beam in a dense plasma target. The beam electrons are treated as particles and described by particle-in-cell simulation including collisions with the target plasma particles. The background target plasma is assumed to be a stationary fluid with temperature variations. The return current and the self-generated electric and magnetic fields are obtained by combining Ampère’s law without the displacement current, the resistive Ohm’s law and Faraday’s law. The equations are solved in two-dimensional cylindrical geometry with rotational symmetry on a regular grid, with centered spatial differencing and first-order implicit time differencing. The algorithms implemented in the code are described, and a numerical experiment is performed for an electron beam with Maxwellian distribution ejected into a uniform deuterium-tritium plasma target.
- electron beam transport,
- hybrid simulation,
- energy deposition

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References (17)

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