SEI
type: Concept
in scheme: ESA Data Ontology
definition: The SEI (Suprathermal Electron Imager) SEI measures the 2-D energy and angular distributions of thermal electrons and soft electrons in the range 1-200 eV/q with particular emphasis on photoelectrons in the 1 to 50 eV range, which are believed to play an important role in the polar wind outflow.

CASSIOPE
type: Concept
notation: CA

SEI
type: Concept

Magnetic Field/Electric Field Instruments
type: Concept

ESA Data Ontology
type: ConceptScheme
type: Ontology