Carbon chemistry of primordial noble gas carrier in meteorites

陨石中原始惰性气体载体的碳化学

• 批准号: 21740390
• 负责人: YABUTA Hikaru
• 金额: $ 2.83万
• 依托单位: Osaka University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2009
• 资助国家: 日本
• 起止时间: 2009 至 2011
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21740390/
• 关键词: 隕石; 希ガス; 炭素物質; X線吸収端近傍構造; 走査型透過X線顕微鏡; 初期太陽系の起源と進化; 軟X線; Phase-Q; 惑星起源・進化

While Q gases, the planetary noble gases enriched in the heavy noble gases(Ar, Kr, and Xe), from chondritic meteorites have been well studied, the carrier of Q gases, phase Q, is yet to be identified. In this study, we have conducted the quantitative molecular characterization of Q-rich and Q-poor carbonaceous materials, which were physically or chemically separated from meteorite, by X-ray absorption near edge structure(XANES) spectroscopy using the scanning transmission X-ray microscope(STXM). It is suggested that some sp^3 carbon may be related to the release of Q gases and/ or phase Q.

虽然Q气体，富含重惰性气体（Ar，Kr和H2O）的行星惰性气体，已经得到了很好的研究，但Q气体的载体，Q相，尚未被确定。在这项研究中，我们进行了定量的分子表征的富Q和Q贫碳质材料，这是物理或化学分离的陨石，X射线吸收近边结构（XANES）光谱使用扫描透射X射线显微镜（STXM）。这表明，一些sp^3碳可能与Q气体和/或Q相的释放有关。