On the origin of inner‐source pickup ions
On the origin of inner‐source pickup ions
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关于内源拾取离子的起源
DOI：
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发表时间：
2002
期刊：
影响因子：
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通讯作者：
P. Bochsler
中科院分区：
文献类型：
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作者：
R. Wimmer–Schweingruber;P. Bochsler
原位测量的拾取离子（PUI）表现出一个组件，几乎热化与太阳风。这意味着起源于太阳附近，通常归因于太阳风与行星际尘埃粒子（IDP）的相互作用。我们提出了一个内源PUI起源的场景，其中一个非常小的IDP人口作为太阳风离子的中和剂。这些IDP的大小小于或相当于IDP材料中太阳风离子的穿透范围。太阳风与这些粒子的相互作用导致净电荷交换，其中太阳风离子以中性或单电荷离子为主离开IDP。当中和的太阳风被再电离时，它被拾取，然后可以作为PUI进行测量。
In situ measurements of pickup ions (PUI) exhibit a component that has nearly thermalized with the solar wind. This implies an origin close to the Sun and is generally ascribed to interaction of the solar wind with interplanetary dust particles (IDPs). We propose a scenario for the origin of inner‐source PUIs in which a population of very small IDPs serves as the neutralizing agent for solar wind ions. The size of these IDPs is less than or comparable to the penetration range, of solar wind ions in IDP material. The interaction of the solar wind with such particles results in a net charge exchange in which solar wind ions exit the IDPs as predominantly neutral or singly‐charged ions. When the neutralized solar wind is reionized, it is picked up and can then be measured as a PUI.