Low Energy Particle data (LEP) -


3. Please set "Date and Time".

LEP has 29ch in Energy and 18ch in Pitch-angle (every 10 degree). Following is conversion table of "from channel to energy", and from count-rate to flux / phase-density".

Ch -> E [eV] COUNT -> J [1/cm2 s sr eV] J -> f [s3/m6]
Electron 10.2 e0.25466 Ch COUNT/(5.8 10-5E) 1.616 10-19 (J/E)
Ion 12.5 e0.25466*Ch COUNT/(2.3 10-4E) 5.449 10-13 (J/E) (Mi/Mp/Q)2

LEP count rate data may still contain background noise depending on pitch angles. The data less than 1000 cps may be unreliable. Those less than 300 cps may be very unreliable. Please ask Prof. Mukai (ISAS, Japan) when using the LEP data of low count rate as noted above.