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Data for secondary-electron production from ion precipitation at Jupiter III: Target and projectile processes in H+, H, and H− + H2 collisions
Atomic Data and Nuclear Data Tables ( IF 2.7 ) Pub Date : 2019-10-26 , DOI: 10.1016/j.adt.2019.101307
D.R. Schultz , H. Gharibnejad , T.E. Cravens , S.J. Houston

To extend the range of data required for modeling the secondary-electron production from ion precipitation into the upper atmosphere of Jupiter, inelastic processes for collisions of 1 keV to 25 MeV H+, H, and H with H2 are considered. As in other work treating the dominant heavy-ion species of magnetospheric origin, O and S ions (Schultz et al., 2017, 2019; Gharibnejad et al., 2019) the classical trajectory Monte Carlo method is employed to describe the secondary-electron-producing channels (single and double ionization, transfer ionization, and single and double stripping) as well as the other inelastic channels (single and double charge transfer and projectile and target excitation) required to model the energy loss and charge state evolution of the precipitating ions in their passage through the atmospheric gas. Data is described and tabulated both as directly obtained from these calculations and normalized to widely accepted recommended values (Hunter et al., 1990) for channels for which recommendations exist. As in the previous work, the overall accuracy and completeness of the data presented is verified by use of a Monte Carlo ion-transport simulation to obtain the stopping power and ion-fraction populations as a function of impact energy in comparison with accepted values. The addition of the present data to models of secondary-electron production in Jupiter’s atmosphere improves such model’s ability to interpret in situ observations of the precipitating ions’ effect by the spacecraft Juno as well as enhancing the physical reality of models of the coupling of the Jovian magnetosphere, ionosphere, and atmosphere.



中文翻译:

木星三号中离子沉淀产生的二次电子数据:H中的靶和子弹过程+,H和H- + H2个 碰撞

为了扩展从离子沉淀到木星上层大气的二次电子生产建模所需的数据范围,碰撞从1 keV到25 MeV H的非弹性过程+,H和H- 与H2个被考虑。与处理磁层起源的主要重离子物种O和S离子的其他工作一样(Schultz等人,2017,2019; Gharibnejad等人,2019),经典轨迹蒙特卡罗方法用于描述二次电子生成通道(单电和双电离,转移电离,单电和双汽提)以及其他非弹性通道(单电和双电荷转移以及弹丸和目标激发),以模拟沉淀过程中的能量损失和电荷状态演化离子穿过大气中的离子。描述和制表的数据既可以直接从这些计算中获得,也可以归一化为广为接受的推荐值(Hunter等人,1990),用于推荐存在的渠道。和以前的工作一样 通过使用蒙特卡洛离子传输模拟来验证所提供数据的整体准确性和完整性,以获得与冲击能量相比接受能量的停止功率和离子分数总体。将当前数据添加到木星大气中的二次电子生产模型中,可以提高该模型的解释能力朱诺号航天器对沉淀离子的影响进行原位观测,并增强了木星磁层,电离层和大气耦合模型的物理真实性。

更新日期:2019-10-26
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