Physics
Scientific paper
May 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002jastp..64..845c&link_type=abstract
Journal of Atmospheric and Solar-Terrestrial Physics, Volume 64, Issue 7, p. 845-860.
Physics
21
Scientific paper
Over two campaigns in 1998 and 1999, multiple sporadic sodium events were observed by the Arecibo Observatory sodium density lidar while simultaneously monitoring the plasma density using the incoherent scatter radar. In this paper, we test the theoretical explanation proposed by where Na+ in a plasma layer is neutralized via an ion-molecule mechanism to form a sporadic sodium layer. A particular challenge is to interpret observations made in a Eulerian frame of observation where the spatial and temporal characteristics of events cannot easily be separated. The reaction scheme in the original mechanism is modified to include the reactions NaO++N2-->Na+.N2+O and NaO++O2-->Na++O3, following the results of theoretical quantum calculations. Six unique case studies of sporadic sodium layers are presented here, and excellent agreement between simulation and observations was obtained for five of them.
Collins Stephen C.
Friedman Jonathan S.
Gerrard Andrew J.
González Sixto A.
Grime Brent W.
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