Electrostatic environment near lunar vertical hole: 3D plasma particle simulations

Electrostatic environment near lunar vertical hole: 3D plasma particle simulations
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月球垂直孔附近的静电环境:3D 等离子体粒子模拟

DOI:
10.1016/j.icarus.2015.07.011
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发表时间:
2015
期刊:
影响因子:
3.2
通讯作者:
M. Nishino
M. Nishino
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Y. Miyake;M. Nishino

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月球表面附近的昼侧静电环境是由太阳风等离子体,光电子和带电的月球表面之间的相互作用,提供拓扑复杂的边界等离子体。三维,粒子在细胞模拟应用于最近发现的垂直孔在月球上,有几十米的空间尺度和更大的深度比直径比典型的撞击坑。洞的垂直壁为光电子和太阳风电子引入了一个新的边界。在孔底建立的电流平衡条件被有限的太阳风电子穿透到孔中,由于在孔壁和连接孔底和壁表面的光电子电流路径处的损失而改变。自洽模型不仅再现了强烈的差异充电之间的阳光照射和阴影的表面,但也揭示了太阳照射表面之间的电位差洞内外,证明了近孔静电环境的独特性。
The dayside electrostatic environment near the lunar surface is governed by interactions among the solar wind plasma, photoelectrons, and the charged lunar surface, providing topologically complex boundaries to the plasma. Three-dimensional, particle-in-cell simulations are applied to recently discovered vertical holes on the Moon, which have spatial scales of tens of meters and greater depth-to-diameter ratios than typical impact craters. The vertical wall of the hole introduces a new boundary for both photo and solar wind electrons. The current balance condition established at a hole bottom is altered by the limited solar wind electron penetration into the hole due to loss at the wall and photoelectron current path connecting the hole bottom and wall surfaces. The self-consistent modeling not only reproduces intense differential charging between sunlit and shadowed surfaces, but also reveals the potential difference between sunlit surfaces inside and outside the hole, demonstrating the uniqueness of the near-hole electrostatic environment.
DOI: --
发表时间: 2009
期刊:
影响因子: --
作者:
原良太郎;野澤あい;木野邦器;岡佑一;臼井英之
通讯作者: 臼井英之
DOI: 10.1029/2009gl040635
发表时间: 2009-11-12
影响因子: 5.2
作者:
Haruyama, Junichi;Hioki, Kazuyuki;Pieters, Carle M.
通讯作者: Pieters, Carle M.