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)

Published

March 15, 2019

Author(s)

David R. Schultz, Heman Gharibnejad, Thomas Cravens, Stephen Houston

Abstract

To improve the physical completeness of the data previously calculated [Schultz et al. ADNDT 113, 1 (2016)] 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=0-8)) 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 inlcude 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 respresentation 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 small (∼ 10-100 keV/u) and high (≥ 2000 keV/u) energies. Use of this expanded data set can improve modeling of the energy deposition by oxygen ion precipitation in an H2 atmosphere, providing 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 iononsphere-atmosphere coupling.

Citation

Atomic Data and Nuclear Data Tables

Volume

126

Issue

March 2019

Pub Type

Journals

Download Paper

https://doi.org/10.1016/j.adt.2018.08.002

Local Download

Citation

Schultz, D. , Gharibnejad, H. , Cravens, T. and Houston, S. (2019), 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, [online], https://doi.org/10.1016/j.adt.2018.08.002, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=925253 (Accessed April 23, 2024)