Charged Aerosol Collection Inside PMSEs by a Magnetically Shielded Rocket Probe during MIDAS/SOLSTICE 2001

Details Charged Aerosol Collection Inside PMSEs by a Magnetically Shielded Rocket Probe during MIDAS/SOLSTICE 2001 Charged Aerosol Collection Inside PMSEs by a Magnetically Shielded Rocket Probe during MIDAS/SOLSTICE 2001

Dec 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001agufmsa41b0742s&link_type=abstract

American Geophysical Union, Fall Meeting 2001, abstract #SA41B-0742

Computer Science

Sound

0305 Aerosols And Particles (0345, 4801), 0394 Instruments And Techniques

Scientific paper

A charged aerosol detector was flown during the MIDAS/SOLSTICE rocket campaign in June 2001 over Andoya, Norway. The probe is a graphite collection surface with a permanent magnet underneath to deflect electrons and light ions. This probe was first used on a sounding rocket over White Sands, NM in 1998, where it measured a thin positively charged layer 500 m thick at an altitude of 86.5 km, followed by a broad negatively charged layer which extended a few kilometers lower [Geophys. Res. Lett. 27, 3825 (2000)]. The flights aboard the two MIDAS payloads were the second use of the probes. The first MIDAS launch was into a triple layered PMSE that extended from 82 to 90 km. On both upleg and downleg, the detector saw finely detailed positive charge structures within the PMSE. These uniquely shaped layers were completely correlated with simultaneously collected positive ion data. On downleg, the probe measured a thin burst of negatively charged particles at 83 km. The second MIDAS flight was fired into a very strong single-layered PMSE. On downleg, thin bursts of negative charge were seen from 87 km to 83 km. Also, a single thick layer of negative charge was measured at 82 km. This layer had a very sharp upper boundary and extended downward over the next km. During both flights the probe also measured a smooth, positively charged background which was well correlated with the positive ion probe. Also seen was a photoelectron signal due to solar UV. Cloud cover prevented lidar support for either launch. This work was funded by NASA.

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