Map the elemental composition of the surface of diverse airless planetary bodies with high spatial resolution Monitor the spatial amp temporal variation of the surface composition of the Galiliean ID: 813618
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Science:Utilize X-ray spectroscopy with true imaging to:Map the elemental composition of the surface of diverse airless planetary bodies with high spatial resolution.Monitor the spatial & temporal variation of the surface composition of the Galiliean Satellites under interaction with energetic plasma.
Miniature Lightweight X-ray Optics (
MiXO
) for Solar System Exploration
PI:
Jonathan
Grindlay
/Harvard University
CoIs
:
Jaesub
Hong/Harvard Univ., Suzanne Romaine/SAO, Brian Ramsey/MSFC, Larry Nittler/Carnegie Institution of Washington, William Boynton/Univ. of Arizona
TRL
2 to 4
Planetary Instrument Concepts for the Advancement of Solar System Operations (PICASSO)
Objectives:
Demonstrate
MiXO for planetary missions by:Build and test 3 MiXO modules of 2 nested X-ray mirror shells and measure PSF for each.Identify the minimum thickness of NiCo-only shells and metal-ceramic shells for X-ray imaging.Design the lightweight support fixture for MiXO and identify the packaging constraints Perform a series of modeling to design the optimal X-ray telescope configuration for planetary applications.
Key Milestones:Fabricate near stress-free hybrid flats by optimizing plasma thermal spray parameters to enable thin shells (Yr1)Fabricate two mandrels for WS and polynomial shells (Yr1)Fabricate ~150 um thick NiCo-only shells (Yr2)Fabricate 240 um thick hybrid shells (Yr2)Calibrate two-shell optics module with a thin NiCo-only shell and a hybrid shell (Yr3)Calibrate a two-shell optics module with multilayer coating (Yr3)
Target: Asteroids, Comets, Airless Planetary Bodies including Trojans, Mercury, the Moon, Mars’ Moon, Galilean Satellites, Enceladus.
(a) Two example MiXO telescope (HEW~30”) configurations optimized for soft (< 2 keV, 1.1 kg, left) and hard (> 2 keV, 1.8 kg, right) X-ray bands, respectively. The design is easily scalable for smaller or bigger telescopes. (b) Proposed layer composition of lightweight metal/ceramic hybrid X-ray mirror shell: 30 m NiCo + 10 m Bond coat + 200 m Al2O3.
(a)
(b)