Results 281 to 290 of about 3,424,751 (303)

Crustal magnetic fields at Mars and ion escape

2020
<p>Does an intrinsic field inhibits or enhances ion escape from planetary ionospheres is still an unsolved issue. Mars does not possess a global intrinsic magnetic field but instead has the strong crustal magnetic fields localized mainly in the southern hemisphere. The crustal magnetic field significantly in&
Eduard Dubinin, Markus Fraenz, Marin Pätzold, Joachim Woch, Kai Fan, Yong Wei, Jim McFadden, Olga Tsareva, Lev Zelenyi   +8 more
openaire   +1 more source

The Effect of the Interplanetary Magnetic Field Clock Angle and the Latitude Location of the Intense Crustal Magnetic Field on the Ion Escape at Mars: An MHD Simulation Study

Journal of Geophysical Research: Space Physics
In this paper, using a three‐dimensional multifluid MHD model, we studied the effects of the interplanetary magnetic field (IMF) clock angle and the latitude position of the intense crustal magnetic field (ICMF) on the escape of ions O+, O2+ ${\mathrm{O}}
Ming Wang, Z. Guan, L. Xie, Jianyong Lu, G. Wei, Haoyang Sui, Jiaqi Zhang, Jinyu Li, Hanxiao Zhang, B. Qu, Qi Xu, Lei Li   +11 more
semanticscholar   +1 more source

Modeling of nonlinear ion-acoustic solitary, snoidal and superperiodic wave phenomena due to ionospheric escape of Venus

Advances in Space Research, 2021
Solar wind induces the escape of ions from the ionospheric shell of an unmagnetized planet, Venus. To analyze the dynamics of ions due to the escape process, the modeling of ion-acoustic waves (IAWs) is scrutinized for an interaction between an upper ...
P. K. Prasad, A. Abdikian, A. Saha
semanticscholar   +1 more source

Theoretical Study on Ion Escape in Martian Atmosphere

Chinese Physics Letters, 2007
Based on the observation that Martian magnetic moment is gradually reducing from the ancient to the present, we investigate the O+ ion flux distribution along magnetic field lines and the ion escaping flux in Martian tail with different assumed Martian magnetic moments.
Shi Jian-Kui, Liu Zhen-Xing, Klaus Torkar, Tielong Zhang   +3 more
openaire   +1 more source

Escape Depth of Gold Ions in Tissue Sections

MRS Proceedings, 2015
ABSTRACTDesorption of gold ions from liver tissue sections, in which intravenously injected gold nanorods were accumulated, were studied to evaluate properties of gold nanorods as a "mass-tag". Gold ions were sensitively detected by using a conventional MALDI-MS machine.
Yasuro Niidome, Masanori Fujii, Naotoshi Nakashima, Takuro Niidome   +3 more
openaire   +1 more source

Parametric analysis of modeled ion escape from Mars

Icarus, 2011
Abstract We develop a parametric fit to the results of a detailed magnetohydrodynamic (MHD) study of the response of ion escape rates (O+, O 2 + and CO 2 + ) to strongly varied solar forcing factors, as a way to efficiently extend the MHD results to different conditions.
Curtis V. Manning, Yingjuan Ma, David A. Brain, Christopher P. McKay, Kevin J. Zahnle   +4 more
openaire   +1 more source

Planetary loss from light ion escape on Venus

Advances in Space Research, 1995
Using Pioneer Venus data, hydrogen and deuterium ions are shown to escape from the hydrogen bulge region in the nightside ionosphere. The polarization electric field propels these light ions upward through the ionosphere and into the ion-exosphere, where H(+) and D(+) continue to be accelerated away from Venus and move into the ionotail and beyond. The
R.E. Hartle, J.M. Grebowsky
openaire   +1 more source

Dications and thermal ions in planetary atmospheric escape

Icarus, 2013
Abstract In the recent years, the presence of dications in the atmospheres of Mars, Venus, Earth and Titan has been modeled and assessed. These studies also suggested that these ions could participate to the escape of the planetary atmospheres because a large fraction of them is unstable and highly energetic.
Lilensten, J., Simon Wedlund, C., Barthélémy, M., Thissen, R., Ehrenreich, D., Gronoff, G., Witasse, O.   +6 more
openaire   +2 more sources

Ion Energization and Escape on Mars and Venus

Space Science Reviews, 2011
Mars and Venus do not have a global magnetic field and as a result solar wind interacts directly with their ionospheres and upper atmospheres. Neutral atoms ionized by solar UV, charge exchange and electron impact, are extracted and scavenged by solar wind providing a significant loss of planetary volatiles.
Dubinin, E., Fraenz, M., Fedorov, A., Lundin, R., Edberg, N., Duru, F., Vaisberg, O.   +6 more
openaire   +2 more sources

Ion escape fluxes from the terrestrial high‐latitude ionosphere

Journal of Geophysical Research: Space Physics, 1987
The coupled continuity and momentum equations for H+, O+, and electrons were solved for the terrestrial ionosphere in order to determine the limiting ion escape fluxes at high latitudes. The effects of solar cycle, season, geomagnetic activity, and the altitude of the acceleration region on the ion escape fluxes were studied for average conditions.
A. R. Barakat, R. W. Schunk, T. E. Moore, J. H. Waite   +3 more
openaire   +1 more source