|Name||PEACE electron spectrometer|
|Abstract||The Plasma Electron And Current Experiment (PEACE) instrument is designed to measure the electron velocity distribution in the vicinity of its host spacecraft, covering an energy range of ~1 eV to ~26 keV and detecting electrons arriving from all possible directions. Each PEACE instrument has two sensor heads, LEEA and HEEA, which are mounted on opposite sides of the spacecraft such that the instantaneous field of view of one is the same as that seen by the other half a spacecraft rotation period later. LEEA and HEEA differ only in geometric factor (HEEA admits more electrons than LEEA when measuring the same energy range). Both sensors sample 4*pi steradians per spin.|
|Description||PEACE key scientific datasets for Cluster-1 (similar for all other Cluster spacecraft)
Pitch Angle Distributions
3D particle distributions
Pitch angle and 3D particle distribution are also provided in particle energy flux and phase space density units, on top of count/s for 3D particle distribution only.
|Publication||Johnstone, A.D., et al., Peace: A Plasma Electron and Current Experiment, Space Sci. Rev., 79, 351-398, 1997; https://doi.org/10.1023/A:1004938001388|
|Temporal Coverage||2001-02-01 - current|
|Mission Description||Cluster is the first constellation of four scientific spacecraft to study the Earth-Sun connection in three dimensions. Cluster offers unique opportunities to investigate physical processes in near-Earth space. Those processes are essential to study and understand the effects of the Sun on the vast Earth’s environment that is a highly varying system both in time and space. The four Cluster spacecraft in a polar orbit are unique in their ability to obtain a three-dimensional picture of medium and large-scale plasma structures. The varying Cluster spacecraft formation from 3 km to a few tens of thousands kilometres along the orbit enables multi-point local measurements of different regions at different scales that cannot be done with any other space mission.
Escoubet, C.P., et al., The Cluster mission, Ann. Geophys., 19, 1197, 2001; https://doi.org/10.5194/angeo-19-1197-2001
Escoubet, C.P, et al., Cluster - Science and Mission Overview, Space Sci. Rev., 79, 11-32, 1997; https://doi.org/10.1023/A:1004923124586
|Creator Contact||Andrew Fazakerley, Principal Investigator, MSSL/University College London, United Kingdom|
|Publisher And Registrant||European Space Agency|
|Credit Guidelines||When publishing any works related to this experiment, please cite the experiment DOI found herein and the Cluster mission DOI (where appropriate).|