期刊
GEOPHYSICAL RESEARCH LETTERS
卷 43, 期 13, 页码 6749-6758出版社
AMER GEOPHYSICAL UNION
DOI: 10.1002/2016GL069715
关键词
molecular ions; magnetotail; ion outflow; lunar volatiles; lunar exosphere
资金
- NASA's Solar System Exploration Research Virtual Institute (SSERVI) [NNX14AG16A]
- NASA LASER [NNX13AJ97G]
- NSF [AGS-1143895]
- NASA [NAS5-02099]
- German Ministry for Economy and Technology
- German Center for Aviation and Space (DLR) [50 OC 0302]
- NASA [471632, NNX13AJ97G] Funding Source: Federal RePORTER
The Acceleration, Reconnection, Turbulence, and Electrodynamics of the Moon's Interaction with the Sun (ARTEMIS) spacecraft observes outflowing molecular ionospheric ions at lunar distances in the terrestrial magnetotail. The heavy ion fluxes are observed during geomagnetically disturbed times and consist of mainly molecular species ( N2+, NO+, and O2+, approximately masses 28-32amu) on the order of 10(5)-10(6)cm(-2)s(-1) at nearly identical velocities as concurrently present protons. By performing backward particle tracing in time-dependent electromagnetic fields from the magnetohydrodynamic Open Global Geospace Circulation Model of the terrestrial magnetosphere, we show that the ions escape the inner magnetosphere through magnetopause shadowing near noon and are subsequently accelerated to common velocities down the low-latitude boundary layer to lunar distances. At the Moon, the observed molecular ion outflow can sputter significant fluxes of neutral species into the lunar exosphere while also delivering nitrogen and oxygen to the lunar volatile inventory.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据