当前位置: X-MOL 学术Atom. Data Nucl. Data Tables › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Data for secondary-electron production from ion precipitation at Jupiter II: Simultaneous and non-simultaneous target and projectile processes in collisions of Oq+ + H2 (q=0–8)
Atomic Data and Nuclear Data Tables ( IF 1.8 ) Pub Date : 2018-10-11 , DOI: 10.1016/j.adt.2018.08.002
D.R. Schultz , H. Gharibnejad , T.E. Cravens , S.J. Houston

To improve the physical completeness of the data previously calculated (Schultz et al., 2017) to enable modeling of the effects of secondary electrons produced by energetic ion precipitation at Jupiter, we extend the treatment to include inelastic processes that occur simultaneously on the projectile (Oq+, q=08)) and target (H2). Here, processes considered in the previous work (single and double ionization, transfer ionization, double capture with subsequent autoionization, single and double stripping, single and double charge transfer, and target excitation) reflecting non-simultaneous projectile and target electron transitions, are replaced with processes that include both non-simultaneous and simultaneous electronic transitions on the target and projectile. These include, for example, single ionization, single ionization with simultaneous single projectile excitation, single ionization with double projectile excitation, single ionization with single projectile stripping, and single ionization with double projectile stripping. Using this expanded set of processes, we show, via Monte Carlo ion-transport simulation, that improved representation of the energy deposition, measured by the stopping power, is obtained as compared to accepted recommended values for intermediate energies (100–2000 keV/u) where the stopping power is largest, while maintaining the existing good agreement with these recommended values for low (10–100 keV/u) and high (2000 keV/u) energies. In addition, the ion-fraction distribution is altered by use of the improved data set. Both of these effects have implications for the energy deposition by oxygen ion precipitation in an H2 atmosphere. Therefore, use of this expanded data set can provide a more physically realistic secondary-electron distribution, and consequently improved atmospheric reaction network, improved description of ion contribution to atmospheric currents, and therefore improved understanding of Jovian ionosphere–atmosphere coupling.



中文翻译:

木星II处离子沉淀产生二次电子的数据:O碰撞中同时和不同时发生的目标和弹丸过程q+ + H2q=08

为了改善先前计算的数据的物理完整性(Schultz等,2017),以便能够对木星上高能离子沉淀产生的二次电子的影响进行建模,我们将处理范围扩展到包括同时在弹丸上发生的非弹性过程( Øq+q=08))和目标(H2)。在这里,替换了先前工作中考虑的过程(单次和两次电离,转移电离,两次捕获及随后的自电离,一次和两次汽提,一次和两次电荷转移以及目标激发),这些过程反映了非同时的弹丸和目标电子跃迁。包括在目标和弹丸上同时进行非同时电子转换的过程。这些包括例如单电离,具有同时单弹丸激发的单电离,具有双弹丸激发的单电离,具有单弹丸剥离的单电离和具有双弹丸剥离的单电离。使用这一扩展的过程集,我们通过蒙特卡洛离子传输模拟显示了改进的能量沉积表示,10–100 keV / u)和高(2000 keV / u)能量。另外,通过使用改进的数据集来改变离子分数分布。这两种效应都对氢中氧离子沉淀产生的能量沉积有影响。2大气层。因此,使用这个扩展的数据集可以提供更实际的二次电子分布,从而改善大气反应网络,改善离子对大气电流贡献的描述,从而更好地理解木星电离层与大气之间的耦合。

更新日期:2018-10-11
down
wechat
bug