Assimilation of Newly Created Ions by the Solar Wind: A Series of Theoretical Studies of Relevant Problems

众所周知，各种来源的中性原子或分子，如星际、彗星或行星，普遍存在于行星际空间。当这些中性粒子足够接近太阳时，它们就会被电离，比如被太阳紫外线辐射电离。因此，新产生的离子会与移动的太阳风相互作用。近年来，在Giacobini-Zinner彗星和Halley彗星的现场观测推动了这一主题领域的研究，并引起了科学界的极大兴趣和关注。在这项工作中，将对太阳风中的离子产生和结构进行一系列的理论研究。这些包括(1)太阳风中离子吸收和后续发展的进一步研究，(2)与离子在吸收状态下的稳定性和热化有关的问题，(3)以及导致新生离子被太阳风同化的可能过程。分析理论和数值模拟技术将在拟议的研究中使用。＊＊＊

It is well known that neutral atoms or molecules of various origins, e.g. interstellar, cometary, or planetary, exist pervasively in interplanetary space. When these neutral particles get sufficiently close to the Sun, they can be ionized, for example by solar ultraviolet radiation. Consequently, the freshly created ions would interact with the moving solar wind. In recent years, research in this topic area has been spurred by in site observations at comets Giacobini-Zinner and Halley and attracted considerable interest and attention from the scientific community. I this work, a series of theoretical studies will be conducted relating to ion creation and structure in the solar wind. These include (1) further studies of ion pickup and subsequent development in a solar wind, (2) problems relevant to the stability and thermalization of ions in a pickup state, (3) and possible processes leading to assimilation of the newborn ions by the solar wind. Both analytical theory and numerical simulation techniques will be used in the proposed studies. ***