| 项目编号: | 1655152
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| 项目名称: | Acquisition of New Excimer Laser Ablation System for a High Resolution ICPMS Facility |
| 作者: | M. Robinson Cecil
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| 承担单位: | The University Corporation, Northridge
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| 批准年: | 2017
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| 开始日期: | 2017-09-15
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| 结束日期: | 2020-08-31
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| 资助金额: | 270208
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| 资助来源: | US-NSF
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| 项目类别: | Continuing grant
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| 国家: | US
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| 语种: | 英语
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| 特色学科分类: | Geosciences - Earth Sciences
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| 英文关键词: | csu-northridge
; sf-icpms
; mass spectrometry facility
; laser signal instability
; laser ablation system couple
; regional facility
; state-of-the-art facility
; new instrumentation
; high resolution mass spectrometer
; laser ablation
; new laser
; laser ablation system
; pi
; new laser ablation system
; constraint
; new efficiency
; mineral
; nm arf excimer laser ablation system
|
| 英文摘要: | This award will support the acquisition of a new laser ablation system to be used in tandem with an existing high resolution mass spectrometer in the CSU-Northridge Department of Geological Sciences. The mass spectrometry facility at CSU-Northridge is a newly developed laboratory used primarily for analyzing isotopic ratios and the concentrations of low abundance elements in earth materials. A laser ablation system couples with the mass spectrometer and provides a way of directly sampling micrometer-scale parts of minerals and / or rocks, which is important for determining the specific timing and growth conditions of the targeted material. The laser ablation - mass spectrometry facility at CSU-Northridge is used primarily for determining ages of a variety of minerals, which has a broad range of applications across many geoscience disciplines. Some examples of those applications include: dating of igneous rocks and constraints on the timing and growth rate of continental crust; dating of metamorphism and constraints on the deformation of crust; dating of minerals in sedimentary rocks and constraints on the evolution of landscapes. Addition of the new laser supported by this award will allow the PIs to build a unique and high demand laboratory easily accessible to Los Angeles area academic institutions, many of which are minority-serving. This proposal also includes funding for a summer research initiative aimed at supporting traditionally underserved students, giving them an opportunity to receive training and mentorship using our state-of-the-art facility in a small-group setting.
This support will allow the PIs to replace an aging (> 13-year old) laser ablation system with a new 193 nm ArF excimer laser ablation system. It will be coupled with an existing single collector sector field inductively coupled plasma mass spectrometer (SF-ICPMS), and used primarily for accessory mineral geochronology and in-situ trace element analysis. This new instrumentation, together with permanent, full-time technical support provided by the University, will allow the PIs to develop a regional facility that will generate precise, high-quality data with new efficiencies that allow for high sample throughput and the analysis of, for example, high n-number detrital zircon datasets. Trace element analysis, which was previously not possible because of laser signal instability, will be used on its own (rastering over glasses fused from a variety of bulk rocks), and in concert with Pb/U age data to link chemical conditions to timing of accessory mineral growth. |
| 资源类型: | 项目
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/88739
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| Appears in Collections: | 全球变化的国际研究计划
科学计划与规划
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| Recommended Citation: | |
M. Robinson Cecil. Acquisition of New Excimer Laser Ablation System for a High Resolution ICPMS Facility. 2017-01-01.
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