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IMP8 Charged Particle Measurement Instrument (CPME)

This home page provides listing and plotting of 20-sec. resolution CPME counts from IMP8
extracted from gzipped ASCII merged data. These data and their description can be found HERE.
Particles units are: counts/sec [cps].

Time span: 1973-10-29 to 2000-12-31

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* Enter start and stop times: (use format YYYYMMDDHH or YYYYMMDD)
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*Select variables
Particles [counts/sec.]
P1 [protons, 0.29 - 0.50 MeV]
P2 [protons, 0.50 - 0.96 MeV]
P3 [protons, 0.96 - 2.00 MeV]
P4 [protons, 2.0 - 4.6 MeV]
P5 [protons, 4.6 - 15.0 MeV]
Z4 [ions (Z>=3), 6 - 105 MeV/nuc]
P7 [protons, 15 - 25 MeV]
P8 [protons, 25 - 48 MeV]
P9 [protons, 48 - 96 MeV]
P10 [protons, 96 - 145 MeV]
P11 [protons, 190 - 440 MeV]
A1 [alpha particles (Z=2), 0.59 - 1.14 MeV/nuc]
A2 [alpha particles (Z=2), 1.14 - 1.80 MeV/nuc]
A3 [alpha particles (Z=2), 1.8 - 4.2 MeV/nuc]
A4 [alpha particles (Z=2), 4.2 - 12.0 MeV/nuc]
A5 [alpha particles (Z=2), 12 - 28 MeV/nuc]
A6 [alpha particles (Z=2), 28 - 52 MeV/nuc]
Z1 [ions (Z>=3), 0.7 - 3.3 MeV/nuc]
Z1' (= Z1 - Z2) [ions (Z>=3), 0.70 - 1.45 MeV/nuc]
Z2 [ions (Z>=3), 1.45 - 3.30 MeV/nuc]
Z3 [ions (Z>=3), 3.1 - 8.8 MeV/nuc]
E4 [electrons, 0.22 - 2.5 MeV]
E5 [electrons, 0.50 - 2.5 MeV]
E6 [electrons, 0.80 - 2.5 MeV]
M [ions >35 MeV/nuc]
S [ions, >50 MeV/nuc]
IMP8 Position
X, GSE,km
Y, GSE,km
Z, GSE,km
X, GSM,km
Y, GSM,km
Z, GSM,km



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If you have any questions/comments about the OMNWeb Plus, contact Dr. Natalia Papitashvili,Mail Code 672, NASA/Goddard Space Flight Center, Greenbelt, MD 20771

NASA Official: Dr. Robert McGuire, Head of the Space Physics Data Facility