HR: 08:30h
AN: SA21A-03 [PDF]
TI: The State of the Neutral Atmosphere and the Electron Precipitation During JOULE From the Photometer and
Electron Energy Analyzer Experiments
AU: * Hecht, J H
EM: james.hecht@aero.org
AF: Space Science Applications Laboratory,The Aerospace Corporation, PO Box 92957, Los Angeles, CA 90009
AU: Clemmons, J H
EM: james.clemmons@aero.org
AF: Space Science Applications Laboratory,The Aerospace Corporation, PO Box 92957, Los Angeles, CA 90009
AU: Slocum, P L
EM: penny.slocum@aero.org
AF: Space Science Applications Laboratory,The Aerospace Corporation, PO Box 92957, Los Angeles, CA 90009
AU: Strickland, D
EM: dstrick@cpi.com
AF: Computational Physics Inc., 8001 Braddock Rd Ste 210, Springfield, VA 22151
AB:
The JOULE rocket experiment was launched from Poker Flat Research Range at 12:09:01 UT on March 27th 2003.
The payload included two instruments built at Aerospace Corporation designed to measure the neutral atmosphere and the
associated particle precipitation. The photometer experiment consisted of three liquid nitrogen cooled filter photometers
which measured the emission from the the N2+ (0,0) band at 391.4 nm, the N2 2P (0,0) band at 337.1 nm, and the OI emission
at 844.6 nm. These data when combined with the Strickland electron transport code are used to derive the atomic oxygen to
molecular nitrogen ratio between 100 and 200 km. They can also be used to derive the electron energy flux and electron
average energy. The electron energy analyzer (EEA) experiment is a top hat style instrument to provide in-situ measurements
of the precipitating electron fluxes and their small-scale variations. The energy range of the EEA is from 10 eV to 30 keV
in 50 exponentially-spaced steps. These data provide a precise measure of the electron energy spectrum at the rocket
altitude. These two independent results will be compared. In addition the EEA data can be combined with the photometer data
to provide the atomic oxygen and molecular nitrogen density profiles along the rocket trajectory. Ground-based data were also
obtained from Poker Flat and Fort Yukon during this experiment Results from all these data sets will be discussed.
DE: 0310 Airglow and aurora
DE: 0355 Thermosphere--composition and chemistry
SC: SPA - Aeronomy [SA]
MN: 2003 Fall Meeting