Conference proceeding
Overview of Phobos/Deimos Regolith Ion Sample Mission (PRISM) Concept
CUBESATS AND NANOSATS FOR REMOTE SENSING II, Vol.10769, pp.107690I-107690I-10
SPIE Optical Engineering + Applications, 2018
09/18/2018
DOI: 10.1117/12.2322415
Abstract
Far more definitive information on composition is required to resolve the question of origin for the Martian moons Phobos and Deimos. Current infrared spectra of the objects are inconclusive due to the lack of strong diagnostic features.Definitive compositional measurements of Phobos could be obtained using in-situ X-ray, gamma-ray, or neutronspectroscopy or collecting and returning samples to Earth for analysis. We have proposed, in lieu of those methods, toderive Phobos and Deimos compositional data from secondary ion mass spectrometry (SIMS) measurements by calibratingthe instrument to elemental abundance measurements made for known samples in the laboratory. We describe thePhobos/Deimos Regolith Ion Sample Mission (PRISM) concept here. PRISM utilizes a high-resolution TOF plasma composition analyzer to make SIMS measurements by observing the sputtered species from various locations of the moons' surfaces. In general, the SIMS technique and ion mass spectrometers complement and expand quadrupole mass spectrometer measurements by collecting ions that have been energized to higher energies, 50-100 eV, and making measurements at very low densities and pressures. Furthermore, because the TOF technique accepts all masses all the time,it obtains continuous measurements and does not require stepping through masses. The instrument would draw less than10 W and weigh less than 5 kg. The spacecraft, nominally a radiation-hardened 12U CubeSat, would use a low-thrust SolarElectric Propulsion system to send it on a two-year journey to Mars, where it would co-orbit with Deimos and then Phobos
Details
- Title: Subtitle
- Overview of Phobos/Deimos Regolith Ion Sample Mission (PRISM) Concept
- Creators
- Pamela Clark - Jet Propulsion LaboratoryMichael Collier - Goddard Space Flight CenterMicah Schaible - Georgia Institute of TechnologyWilliam M. Farrell - Goddard Space Flight CenterDavid Folta - Goddard Space Flight CenterKyle M. Hughes - Goddard Space Flight CenterJohn W. Keller - Goddard Space Flight CenterBen Malphrus - Morehead State UniversityAndrew S. Rivkin - Johns Hopkins University Applied Physics LaboratoryScott Murchie - Johns Hopkins University Applied Physics LaboratoryDana Hurley - Johns Hopkins University Applied Physics LaboratoryJasper Halekas - University of IowaRichard Vondrak - Goddard Space Flight CenterTimothy Stubbs - Goddard Space Flight CenterRosemary Killen - Goddard Space Flight CenterMenelaos Sarantos - Goddard Space Flight CenterSarah L. Jones - Goddard Space Flight CenterJared Espley - Goddard Space Flight CenterGina Dibraccio - Goddard Space Flight Center
- Resource Type
- Conference proceeding
- Publication Details
- CUBESATS AND NANOSATS FOR REMOTE SENSING II, Vol.10769, pp.107690I-107690I-10
- Conference
- SPIE Optical Engineering + Applications, 2018
- DOI
- 10.1117/12.2322415
- ISSN
- 0277-786X
- eISSN
- 1996-756X
- Publisher
- SPIE
- Language
- English
- Date published
- 09/18/2018
- Description audience
- PUBLIC
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984428796302771
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