No JavaScript detected
Instrument details
Acronym
LEP
Full name
Low Energy Particles Experiment
Purpose
To study the dynamics of the magnetotail plasmas, plasma circulation and its variability in response to fluctuations in the solar wind and in the interplanetary magnetic field
Short description
Assemblage of three sensors, to measure: the 3-D velocity distributions of hot plasma in the magnetosphere (electrons in the energy range 6-36 eV, positive ions in the range 0.007-42 keV/Q); the 3-D velocity distributions of solar wind ions in the energy range 0.1-8 keV/Q; ion mass spectrometry for 3-D determinations of the ion composition in the energy range 0-25 keV/Q
Background
Part of a package of instruments to observe the Magnetosphere by navigating across its tail
Scanning Technique
Travelling cross the Magnetosphere in a highly-elliptical orbit
Resolution
N/A
Coverage / Cycle
Magnetospheric volume
Mass
Power
Data Rate
Providing Agency
JAXA
Instrument Maturity
Flown on an R&D satellite
Utilization Period:
1992-10-02 to ≥2022
Last update:
2021-12-16
Detailed characteristics
Satellites this instrument is flying on
Note: a red tag indicates satellites no longer operational, a
green tag indicates operational satellites, a blue tag indicates
future satellites
Instrument classification
Solar and space environment monitors Energetic particle spectrometer
WIGOS Subcomponents
Subcomponent 2 Electron sensor [cross magnetosphere] Proton sensor [cross magnetosphere] Alpha-particle sensor [cross magnetosphere] Heavy ion sensor [cross magnetosphere] Subcomponent 3 Heavy ions mass spectrometer [from LEO and HEO]
Mission objectives
Primary mission objectives Alpha particles differential directional flux Electron differential directional flux Heavy ion angular flux energy and mass spectrum Heavy ion flux energy and mass spectrum Proton differential directional flux Show all Show fewer
Tentative Evaluation of Measurements
The following list indicates which measurements can typically be
retrieved from this category of instrument. To see a full Gap Analysis by Variable,
click on the respective variable.
Note: table can be sorted by clicking on the column headers
Instrument: LEP