The Neutral Particle Imager (NPI) of the ASPERA-4 package
flown on Venus Express provides measurements of the integral ENA flux with no
mass and energy resolution but with 4.6 deg x 11.5 deg angular resolution. The
intrinsic field of view is 9 deg x 344 deg. The sensor utilizes a graphite surface
to suppress the UV background. ENAs incident on the surface at a grazing angle of
20 deg are reflected and/or cause ion sputtering. An MCP stack detects the reflected
particles and sputtered fragments with a discrete anode.
Version:2.2.2
The Neutral Particle Imager (NPI) of the ASPERA-4 package
flown on Venus Express provides measurements of the integral ENA flux with no
mass and energy resolution but with 4.6 deg x 11.5 deg angular resolution. The
intrinsic field of view is 9 deg x 344 deg. The sensor utilizes a graphite surface
to suppress the UV background. ENAs incident on the surface at a grazing angle of
20 deg are reflected and/or cause ion sputtering. An MCP stack detects the reflected
particles and sputtered fragments with a discrete anode.
| Role | Person | StartDate | StopDate | Note | |
|---|---|---|---|---|---|
| 1. | PrincipalInvestigator | spase://SMWG/Person/Stas.Barabash |