Acquisition of a cathodoluminescence detector to increase imaging capability of existing SEM facility, Department of Geoscience, University of Iowa

购买阴极发光探测器以提高爱荷华大学地球科学系现有 SEM 设施的成像能力

• 批准号: 1038684
• 负责人: William McClelland
• 金额: $ 7.49万
• 依托单位: University of Iowa
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-10-01 至 2012-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1038684&HistoricalAwards=false
• 关键词: Acquisition; cathodoluminescence; detector; increase; imaging

1038684McClellandThis grant supports acquisition of a cathodoluminescence (CL) spectrometer which will be mated to an existing variable pressure scanning electron microscope (SEM) in the Department of Geosciences at the University of Iowa. CL imaging will support studies of mineral growth history by allowing for visualization and mapping of crystal zoning and microstructural characteristics. CL scanning using an SEM will support subsequent targeted elemental analysis and/or isotopic analysis of distinct growth rims using other electron microscopy techniques, secondary ion mass spectrometery or laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS). The instrument will complement a recently NSF MRI supported laser ablation ICP-MS facility in the Department of Geoscience for zircon geochronology and trace element zonation in minerals and support a range of research in igneous and metamorphic petrology, impact processes, and analysis of clastic sedimentary and carbonate phases to elucidate the environmental conditions at the time of their deposition. The CL microscope will support student research training across multiple departments on campus and the PIs seek to attract underrepresented students through an extant Alliance for Graduate Education and Professoriate (AGEP) program and a NASA Education grant targeted at encouraging undergraduate women to pursue science careers. The instrument will also support collaborative research with faculty and students from nearby Cornell College, a regional liberal arts institution. ***

1038684麦克莱伦这笔赠款支持收购的阴极发光（CL）光谱仪，将配对到现有的变压扫描电子显微镜（SEM）在地球科学系在爱荷华州的大学。 CL成像将支持矿物生长历史的研究，允许可视化和映射的晶体分区和显微结构特征。 使用SEM的CL扫描将支持随后使用其他电子显微镜技术、二次离子质谱或激光烧蚀电感耦合等离子体质谱（LA-ICP-MS）对不同生长边缘进行的靶向元素分析和/或同位素分析。 该仪器将补充最近NSF MRI支持的激光烧蚀ICP-MS设施在地球科学系锆石地质年代学和微量元素分带矿物和支持一系列的研究在火成岩和变质岩石学，影响过程，以及碎屑沉积和碳酸盐相的分析，以阐明其沉积时的环境条件。 CL显微镜将支持校园多个部门的学生研究培训，PI寻求通过现有的研究生教育和教授联盟（AGEP）计划和NASA教育补助金吸引代表性不足的学生，旨在鼓励本科女性追求科学事业。 该仪器还将支持与附近康奈尔学院（一所区域文科院校）的教师和学生进行合作研究。 ***