Insight into theory-experiment comparisons of wake measurements in the plasmasphere
dc.contributor.author | Samir, Uri | en_US |
dc.contributor.author | Comfort, R. H. | en_US |
dc.contributor.author | Singh, N. | en_US |
dc.contributor.author | Hwang, K. S. | en_US |
dc.contributor.author | Stone, Nobie H. | en_US |
dc.date.accessioned | 2006-04-07T20:46:35Z | |
dc.date.available | 2006-04-07T20:46:35Z | |
dc.date.issued | 1989-07 | en_US |
dc.identifier.citation | Samir, U., Comfort, R. H., Singh, N., Hwang, K. S., Stone, N. H. (1989/07)."Insight into theory-experiment comparisons of wake measurements in the plasmasphere." Planetary and Space Science 37(7): 873-880. <http://hdl.handle.net/2027.42/27873> | en_US |
dc.identifier.uri | http://www.sciencedirect.com/science/article/B6V6T-46YCYDP-9T/2/4cc5156533e4555e9777f1158a8c4339 | en_US |
dc.identifier.uri | https://hdl.handle.net/2027.42/27873 | |
dc.description.abstract | Calculated results from a modified one-dimensional time-dependent plasma expansion model are compared with wake measurements of low energy H+ ions made in the plasmasphere which consists of 77-90% H+ and 23 10% He+. The variation of the theoretical-to-experimental results with the H+ ionic Mach number (SH+) in the range 0.5 H+ < 1.2 is shown. It is found that the theoretical model used overestimates the particle flux in the wake by factors of 2 to 6. Possible causes for these differences are examined. Discussions regarding; (1) the shortcomings of using one-dimensional models and other simplifications commonly used in theoretical modeling, (2) the use of measurements from probes having finite angular acceptance in wake studies, and (3) a relative comparison between a three-dimensional neutral approximation and the modified one-dimensional model used here are given. This comparison shows that for the plasmaspheric parameters used here, the application of a neutral particle model yields reasonable results, since the ion thermal motion rather than the local electric field dominates the filling of the wake (particularly for weakly charged bodies). These discussions provide additional insight into such theory-experiment comparisons and should be of practical use. | en_US |
dc.format.extent | 650252 bytes | |
dc.format.extent | 3118 bytes | |
dc.format.mimetype | application/pdf | |
dc.format.mimetype | text/plain | |
dc.language.iso | en_US | |
dc.publisher | Elsevier | en_US |
dc.title | Insight into theory-experiment comparisons of wake measurements in the plasmasphere | en_US |
dc.type | Article | en_US |
dc.rights.robots | IndexNoFollow | en_US |
dc.subject.hlbsecondlevel | Atmospheric, Oceanic and Space Sciences | en_US |
dc.subject.hlbtoplevel | Science | en_US |
dc.description.peerreviewed | Peer Reviewed | en_US |
dc.contributor.affiliationum | Space Physics Research Laboratory, University of Michigan, Ann Arbor, MI 48109, USA; Department of Geophysics and Planetary Sciences, Tel-Aviv University, Israel. | en_US |
dc.contributor.affiliationother | Center for Space Plasma and Aeronomic Research, University of Alabama in Huntsville, Huntsville, AL 35899, USA; Department of Physics, NASA/Marshall Space Flight Center, Huntsville, AL 35812, USA. | en_US |
dc.contributor.affiliationother | Center for Space Plasma and Aeronomic Research, University of Alabama in Huntsville, Huntsville, AL 35899, USA; Department of Electrical & Computer Engineering, NASA/Marshall Space Flight Center, Huntsville, AL 35812, USA. | en_US |
dc.contributor.affiliationother | Center for Space Plasma and Aeronomic Research, University of Alabama in Huntsville, Huntsville, AL 35899, USA; Department of Mechanical Engineering, NASA/Marshall Space Flight Center, Huntsville, AL 35812, USA. | en_US |
dc.contributor.affiliationother | Space Science Laboratory, NASA/Marshall Space Flight Center, Huntsville, AL 35812, USA. | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/27873/1/0000287.pdf | en_US |
dc.identifier.doi | http://dx.doi.org/10.1016/0032-0633(89)90138-4 | en_US |
dc.identifier.source | Planetary and Space Science | en_US |
dc.owningcollname | Interdisciplinary and Peer-Reviewed |
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