1. CEA, DAM, DIF,Arpajon,France,F-91297
2. Orion Space Solutions,Louisville,CO,USA
3. University of Iowa,Department of Physics and Astronomy,Iowa City,IA,USA
4. Los Alamos National Laboratory,Los Alamos,New Mexico,USA
5. Royal Belgian Institute for Space Aeronomy,Brussels,Belgium,B-1180
6. University of Minnesota,School of Physics and Astronomy,Minneapolis,Minnesota,USA