English: Instrument of the scientific satellite Advanced Composition Explorer.The Solar Energetic Particle Ionic Charge
Analyzer (SEPICA) determines the ionic charge
state, elemental composition, and energy spectra of
energetic solar ions. This is vital information in
studying the material accelerated in solar events. It
also allows us to learn more about element and isotope
selection processes and particle acceleration
on the Sun. During solar quiet times, SEPICA
directly measures the charge of ACR ions
(described later), including nitrogen, oxygen, and
neon. It covers a range from 0.5 MeV/charge to
about 5 MeV/charge for charge state composition,
and up to 10 MeV/nucleon for element analysis (a
nucleon is a particle from the nucleus, either a proton
or a neutron).
Français : Instrument du satellite scientifique Advanced Composition Explorer (ACE) lancé en 1997. Le Solar Energetic Particle Ionic Charge Analyzer (SEPICA) permet de déterminer la charge électrique, le type d'élément et l'énergie des ions émis par le Soleil ayant une énergie comprise entre 0,5 et 10 MeV par nucléon.
A páxina web da NASA proporciona un gran número de imaxes dos soviéticos/ da axencia rusa do espazo e outras axencias espaciais non norteamericanas. Esta non están necesariamente no dominio público.
{{Information |Description ={{en|1=Instrument of the scientific satellite Advanced Composition Explorer.The Solar Energetic Particle Ionic Charge Analyzer (SEPICA) determines the ionic charge state, elemental composition, and energy spectra of energeti