Surface Processes in Icy Objects in the Outer Solar System

外太阳系冰冷物体的表面过程

• 批准号: 0807830
• 负责人: Raul Baragiola
• 金额: $ 50.08万
• 依托单位: University of Virginia Main Campus
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2008
• 资助国家: 美国
• 起止时间: 2008-08-01 至 2012-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0807830&HistoricalAwards=false
• 关键词: Surface; Processes; Icy; Objects; Outer

AST-0807830BaragiolaThis research addresses radiation effects on surface ices in outer solar system objects using laboratory techniques. Effects that alter the appearance of the ices are of special interest because they are significant for remote sensing of icy satellites, planetary rings and trans-Neptunian objects. Effects being explored include: a) the stability of molecules trapped in ice subject to ultraviolet solar radiation and magnetospheric ion impact; b) the relative efficiency of photons, electrons, light and heavy ions in affecting crystalline ice; and c) the electrostatic charging of surface ice by energetic particle impact. The research will use a unique combination of experimental techniques: exposure to ion, electron and laser beams and vacuum ultraviolet light, optical spectroscopy and interferometry, and microgravimetry and mass spectrometry at cryogenic temperatures in ultrahigh vacuum.Broader impacts include inspiring students and educating them in the characteristics needed for quality research, professional development of early career scientists, and increased participation of under-represented groups. The work also brings techniques from surface science into laboratory astronomy.

AST-0807830 Baragiola这项研究使用实验室技术解决了太阳系外天体表面冰的辐射效应。 改变冰的外观的影响特别令人感兴趣，因为它们对冰冷的卫星、行星环和海王星外天体的遥感具有重要意义。 正在探讨的影响包括：a）冰中分子在紫外线太阳辐射和磁层离子撞击下的稳定性; B）光子、电子、轻离子和重离子影响结晶冰的相对效率;以及c）高能粒子撞击对表面冰的静电充电。 这项研究将使用一种独特的实验技术组合：暴露于离子，电子和激光束和真空紫外光，光谱学和干涉测量学，以及微重力和质谱在低温温度下在低温真空。更广泛的影响包括启发学生和教育他们的特点所需的质量研究，职业生涯早期的科学家的专业发展，并增加代表性不足群体的参与。 这项工作还将表面科学的技术带入了实验室天文学。