Surface Properties of Icy Satellites

AST 0098144 Baragiola Dr.弗吉尼亚大学的Raul Baragiola将进行实验室研究，以解决有关外太阳系冰冷卫星表面及其与高能辐射和大气物种相互作用的关键问题。 Baragiola博士计划测量原子氧与水和含碳矿物的相互作用。 将建立实验，以了解质子的结果如何衡量高度电离的较重离子，这些离子构成外太阳系磁层溅射的主要来源。 控制无定形冰形态的能力将通过研究微观结构如何影响大气气体的吸附/吸收和光学反射率来实现。 这项研究对彗星、环粒子和星际颗粒有直接的影响。 这些结果还可应用于地球上冰的遥感、地球高层大气中层冰的物理和化学、离子和光子对材料的处理、非晶态材料的材料科学、生物组织中的辐射效应和宇宙生物学。 ***

AST 0098144BaragiolaDr. Raul Baragiola, at the University of Virginia, will carry out laboratory research to address key questions about the surfaces of icy satellites in the outer solar system and their interaction with energetic radiation and atmospheric species. Dr. Baragiola plans to measure the interaction of atomic oxygen with water and carbonaceous minerals. Experiments will be set up to learn how the results for protons scale for highly ionizing, heavier ions, which constitute the predominant source of magnetospheric sputtering in the outer solar system. The ability to control the morphology of amorphous ice will be followed by the study of how microstructure affects the adsorption/absorption of atmospheric gases and optical reflectance. The research has direct implications for comets, ring particles, and interstellar grains. The results also have applications to remote sensing of ices on Earth, the physics and chemistry of mesospheric ice in the Earth's upper atmosphere, processing of materials by ion and photons, materials science of amorphous materials, radiation effects in biological tissue and exobiology. ***