Charge exchange between highly charged ions and neutral atoms and molecules has been considered as one of the important mechanisms controlling soft X-ray emissions in many astrophysical objects and environments. However, for modeling charge exchange soft X-ray emission, the data of n- and l-resolved state-selective capture cross sections are often obtained by empirical and semiclassical theory calculations. With a newly built cold target recoil-ion momentum spectroscopy (COLTRIMS) apparatus, we perform a series of measurements of the charge exchange of Ne^(8,9)+ ions with He and H₂ for collision energy ranging from 1 to 24.75 keV/u. n-resolved state-selective capture cross sections are reported. By comparing the measured state-selective capture cross sections to those calculated by the multichannel Landau–Zener method (MCLZ), it is found that MCLZ calculations are in good agreement with the measurement for the dominant n capture for He target. Furthermore, by using nl-resolved cross sections calculated by MCLZ and applying l distributions commonly used in the astrophysical literature to experimentally derived n-resolved cross sections, we calculate the soft X-ray emissions in the charge exchange between 4 keV/u Ne⁸⁺ and He by considering the radiative cascade from the excited Ne⁷⁺ ions. Reasonable agreement is found in comparison to the measurement for even and separable models, and MCLZ calculations give results in a better agreement.

高电荷离子与中性原子和分子之间的电荷交换已被认为是控制许多天体物体和环境中软X射线发射的重要机制之一。但是，对于建模电荷交换软X射线发射，通常通过经验和半经典理论计算来获得n和l分辨的状态选择性捕获截面的数据。借助新建的冷目标反冲离子动量能谱仪（COLTRIMS），我们对碰撞能量从1到24.75 keV /的Ne ^（8,9）+离子与He和H ₂的电荷交换进行了一系列测量。你 ñ报告了解析的状态选择性捕获截面。通过将测得的状态选择性俘获截面与通过多通道Landau-Zener方法（MCLZ）计算得到的结果进行比较，发现MCLZ计算与He目标的主要n俘获的测量结果非常吻合。此外，通过使用MCLZ计算的nl解析截面并将天文学文献中常用的l分布应用于实验得出的n解析截面，我们计算了4 keV / u Ne ⁸之间的电荷交换中的软X射线发射⁺和He通过考虑激发的Ne ⁷⁺的辐射级联离子。与针对偶数模型和可分离模型的测量结果相比，可以找到合理的一致性，并且MCLZ计算得出的结果具有更好的一致性。