HR: 1340h
AN: P43A-0901 [Abstracts]
TI: Panoramic imaging mass-spectrometer for planetary studies
AU: * Vaisberg, O
EM: ovaisberg@swri.edu
AF: Southwest Research Institute, P.O. Drawer 28510, San Antonio, TX 78228-0510
United States
AU: * Vaisberg, O
EM: ovaisberg@swri.edu
AF: Space Research Institute (IKI), 84/32 Profsoyuznaya Str,, Moscow, 117997
Russian Federation
AU: Berthelier, J
EM: jean-jacques.berthelier@cetp.ipsl.fr
AF: Centre d'tude des Environnements Terrestre et Plantaires/CNRS, 4 avenue de Neptune, Saint-Maur, 94107
France
AU: Torkar, K
EM: Klaus.Torkar@oeaw.ac.at
AF: Institut fur Weltraumforschung, Schmiedlstr. 6, Graz, 8042
Austria
AU: Leblanc, F
EM: francois.leblanc@aerov.jussieu.fr
AF: Service d'Aeronomie du CNRS, Cedex BP n"3, Verrieres-Le-Buisson, 91371
France
AU: Escoubet, P
EM: Philippe.Escoubet@esa.int
AF: ESA/ESTEC (SCI-RSSD), Postbus 299,
Keplerlaan, 1, Noordwijk, 2200
Netherlands
AU: Woch, J
EM: woch@linmpi.mpg.de
AF: Max-Planck-Institut fr
Sonnensystemforschung
, Max-Planck-Strasse 2, Katlenburg-Lindau, 37191
Germany
AU: Baumjohann, W
EM: baumjohann@oeaw.ac.at
AF: Institut fur Weltraumforschung, Schmiedlstr. 6, Graz, 8042
Austria
AU: Avanov, L
EM: Levon.Avanov@msfc.nasa.gov
AF: NASA MSFC National Space Science & Technology Center, Mail Code SD50
320 Sparkman Dr., Huntsville, AL 35805
United States
AU: Avanov, L
EM: Levon.Avanov@msfc.nasa.gov
AF: Space Research Institute (IKI), 84/32 Profsoyuznaya Str,, Moscow, 117997
Russian Federation
AU: Burch, J
EM: jburch@swri.edu
AF: Southwest Research Institute, P.O. Drawer 28510, San Antonio, TX 78228-0510
United States
AU: McComas, D
EM: dmccomas@swri.edu
AF: Centre d'tude des Environnements Terrestre et Plantaires/CNRS, 4 avenue de Neptune, Saint-Maur, 94107
France
AU: Delcourt, D
EM: dominique.delcourt@cetp.ipsl.fr
AF: Centre d'tude des Environnements Terrestre et Plantaires/CNRS, 4 avenue de Neptune, Saint-Maur, 94107
France
AU: Wurz, P
EM: peter.wurz@soho.unibe.ch
AF: Physikalisches Institut, University of Bern, Sidlerstr. 5, Bern, CH-3012
Switzerland
AU: Grishin, V
EM: grishin@tst.ru
AF: Space Research Institute (IKI), 84/32 Profsoyuznaya Str,, Moscow, 117997
Russian Federation
AU: Smirnov, V
EM: vsm@plasma.rssi.ru
AF: Space Research Institute (IKI), 84/32 Profsoyuznaya Str,, Moscow, 117997
Russian Federation
AU: Babkin, V
EM: vbabkin@iki.rssi.ru
AF: Space Research Institute (IKI), 84/32 Profsoyuznaya Str,, Moscow, 117997
Russian Federation
AU: Szego, K
EM: szego@rmki.kfki.hu
AF: Research Institute for Particle and Nuclear Physics, 29-33 Konkoly Thege street, Budapest, H-1121
Hungary
AB:
Plasma diagnostics can provide extremely useful information for solar system studies. Neutral and ion sputtering from the
surface leads to the formation of neutral and ion exospheres with compositions that reflect the surface composition modified
by ionization and transport processes around the body. Measurements of ion composition and velocity distributions provide
important information about surface composition and its recycling. Plasma measurements from low altitude spacecraft and
landers on planetary bodies without atmospheres can be used to map the surface composition, while spectrometers onboard
spacecraft orbiting planets with atmosphere are used for study of planetary losses, mass-exchange with the solar wind, and
the long-term evolution of their environment.
To perform reliable measurements of planetary plasmas a complete 3-dimensional velocity distributions of various ion species
is necessary. In addition, if fast measurements of the major ion species are the main goal of plasma physics studies, precise
measurements of the minor ion composition are often essential to unveil important properties of the atmosphere or the
surface. Therefore ion mass spectrometers for solar system missions require both the capability of making fast measurements
of the 3D-velocity distribution of ions and high mass resolution for detailed composition studies.
We describe a novel type of miniature panoramic ion mass-spectrometer suitable for making such 3-dimensional measurements of
ion components with high mass resolution. The feeding electron optics of our plasma analyzer (CAMERA) allows for fast
measurements within an instantaneous 2p field of view, which has no gaps and can be accomplished on either stabilized or
rotating spacecraft, or landers. It is followed by a time-of-flight mass-spectrometer that retains imaging capabilities of
the feeding optics and provides mass-resolution M/ΔM in excess of 100. Our spectrometer also provides flexible control
of the energy bandwidth, mass and angular resolution, as well as high temporal resolution and UV rejection. The mass of the
2p panoramic ion energy-mass-spectrometer can be made as low as 1 kg.
DE: 5405 Atmospheres--composition and chemistry
DE: 5494 Instruments and techniques
DE: 6006 Atmospheres--evolution
DE: 6008 Composition
DE: 6040 Origin and evolution
SC: Planetary Sciences [P]
MN: 2004 AGU Fall Meeting