The Apollo 14 Charged Particle Lunar Environment Experiment (CPLEE) measured the energy spectra of low-energy charged particles striking the lunar surface by observing the fluxes of electrons and ions with energies from 40 eV to 20 keV in two directions: local vertical and 60 degrees from vertical toward lunar west. The primary purpose of the experiment was to examine plasma particles originating from the Sun and the low-energy particle flux in the magnetic tail of the Earth.

The Apollo 14 Charged Particle Lunar Environment Experiment (CPLEE) measured the
              energy spectra of low-energy charged particles striking the lunar surface by observing
              the fluxes of electrons and ions with energies from 40 eV to 20 keV in two directions:
              local vertical and 60 degrees from vertical toward lunar west. The primary purpose of
              the experiment was to examine plasma particles originating from the Sun and the
              low-energy particle flux in the magnetic tail of the Earth.

Created by the NASA Space Science Data Coordinated Archive.

Apollo 14 Charged Particle Lunar Environment Experiment (CPLEE)

APOLLO 14 COLD CATHODE ION GAGE EXPERIMENT for A14A

Apollo 14 Suprathermal Ion Detector

Apollo 14 ALSEP Charged Particle Lunar Environment Experiment

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