Optical Observation of the Ionospheric-Magnetospheric Outflowing Oxygen Ions by XUV Onboard Sounding Rocket SS-520-2

Details Optical Observation of the Ionospheric-Magnetospheric Outflowing Oxygen Ions by XUV Onboard Sounding Rocket SS-520-2 Optical Observation of the Ionospheric-Magnetospheric Outflowing Oxygen Ions by XUV Onboard Sounding Rocket SS-520-2

Dec 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001agufmsm51b0829t&link_type=abstract

American Geophysical Union, Fall Meeting 2001, abstract #SM51B-0829

Computer Science

Sound

2427 Ionosphere/Atmosphere Interactions (0335), 2704 Auroral Phenomena (2407), 2736 Magnetosphere/Ionosphere Interactions, 2776 Polar Cap Phenomena

Scientific paper

We built the Extreme ultraviolet scanner (XUV) for imaging oxygen ions to outflow from the polar ionosphere into the magnetosphere. The XUV onboard a sounding rocket SS-520-2 imaged the oxygen ions above 1000 km altitude near the polar cusp on December 4, 2000. The XUV is a normal incidence telescope that has a peak sensitivity at the wavelength 83.4 [nm] of OII emission and consists of a Mo coated mirror, a band pass filter and a channel electron multiplier. The band pass filter selectively transmits OII emission and eliminates background emissions such as HeI emission at the 30.4 [nm], HeII emission at the 58.4 [nm], and HI emission at the 121.6 [nm]. The observed OII emission intensity is proportional to the ion density integrated along the line of sight. Therefore The observed OII emission intensity distribution makes possible to determine the oxygen ion distribution. We will present the oxygen ion distribution and discuss the process and quantity of that ionospheric oxygen ions outflow into the magnetosphere.

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