Physics – Plasma Physics
Scientific paper
Dec 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011agufmsm31c..05m&link_type=abstract
American Geophysical Union, Fall Meeting 2011, abstract #SM31C-05
Physics
Plasma Physics
[7845] Space Plasma Physics / Particle Acceleration, [7867] Space Plasma Physics / Wave/Particle Interactions, [7894] Space Plasma Physics / Instruments And Techniques
Scientific paper
BARREL is a multiple-balloon investigation that will study electron losses from Earth's Radiation Belts. Atmospheric losses of relativistic electrons play an important role in radiation belt dynamics; precipitation into the atmosphere can deplete the radiation belts during the main phase of some geomagnetic storms and is also observed during relatively low geomagnetic activity levels. BARREL will consist of Antarctic balloon campaigns conducted in January of 2013 and 2014. During each campaign, a total of 20 small (~20 kg) balloon payloads will be launched to an altitude of 30-35 km to maintain an array of payloads extending across up to 8 hours of magnetic local time. Each balloon will carry a NaI scintillator to measure the bremsstrahlung X-rays produced by precipitating relativistic electrons as they collide with neutrals in Earth's atmosphere, and a DC magnetometer to explore the nature of observed Ultra Low Frequency temporal modulations of precipitation. We present an overview and status of BARREL, and some highlights from the BARREL test flights. The combination of BARREL with the in situ measurements from RBSP, THEMIS, and other missions provides a unique opportunity to study the wave-particle interactions believed to be responsible for the precipitation.
Anderson Benjamin R.
Comess M.
Liang Xi Xia
McCarthy Martin
Millan Robyn M.
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