In-Situ X-Ray Imaging System for Planetary Science

This project is to study the feasibility of developing an in-situ, compact, low-power,non-destructive X-ray imaging instrument to investigate the ice/rock critical properties, such as density, porosity, crack, and chemical non–uniformity, liquid distribution and flowing path, etc..This proposed system will be built with compact low-power X-ray components and an innovative system configuration. This imaging system would be expected to be less than 10 pounds with a total size as a shoe box. The sample could be either ice or rock. The compact X-ray imaging system has a significant potential to be useful for NASA’s New Frontiers and Discovery missions cross most planetary bodies.The significance of the proposed technical innovation is from three aspectsTo leverages the rapid progress in X-ray source and X-ray imaging sensor for building a compact and efficient system.To use a hybrid optic system to get multiple monochromatic and polychromatic beams for enhancing the system efficiency and capability in data collection.To combine the beam system with an innovative scan mechanism for yielding the 3D multi-spectral images with rich information about the samples. Furthermore, this proposed technology could be combined with other instruments, such as the Mars CheMin system, to form a synergy of the dual/triple modality. The process could be: first to perform the non-destructive multi-spectral 3D CT imaging with the samples, and then do the X-ray Diffraction (XRD) and X-ray Fluorescence (XRF) measurements after the samples to be grounded to powder.The synergy will yield a great amount of information, such as density, porosity, crack, phase composition, etc, as well as the chemical compounds, and trace elements etc. of the samples. To gain such information covering a broad range of the fields would significantly help us to expand our knowledge about the solar system and the universe.