气候变化领域集成服务门户(CCPortal): Effect of Beam Current and Diameter on Electron Probe Microanalysis of Carbonate Minerals

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DOI	10.1007/s12583-017-0939-x
	Effect of Beam Current and Diameter on Electron Probe Microanalysis of Carbonate Minerals
	Zhang, Xing; Yang, Shuiyuan; Zhao, He; Jiang, Shaoyong; Zhang, Ruoxi; Xie, Jing
通讯作者	Yang, SY (通讯作者)
发表日期	2019
ISSN	1674-487X
EISSN	1867-111X
起始页码	834
结束页码	842
卷号	30 期号:4
英文摘要	The effect of operating conditions on the time-dependent X-ray intensity variation is of great importance for the optimal EPMA conditions for accurate determinations of various elements in carbonate minerals. Beam diameters of 0, 1, 2, 5, 10, 15, and 20 mu m, and beam currents of 3, 5, 10, 20, and 50 nA were tested. Ca, Mg, Zn, and Sr were found to be more sensitive to electron beam irradiation as compared to other elements, and small currents and large beam diameters minimized the time-dependent X-ray intensity variations. We determined the optimal EPMA operating conditions for elements in carbonate: 10 mu m and 5 nA for calcite; 10 mu m and 10 nA for dolomite; 5 mu m and 10 nA or 10 mu m and 20 nA for strontianite; and 20 nA and 5 mu m for other carbonate. Elements sensitive to electron beam irradiation should be determined first. In addition, silicate minerals are preferred as standards rather than carbonate minerals.
关键词	VOLCANIC-INTRUSIVE COMPLEX ALKALI-SILICATE-GLASSES MICROPROBE ANALYSIS CHINA EVIDENCE X-RAY TOURMALINE INTENSITY THICKNESS APATITE DAMAGE
英文关键词	carbonate minerals; electron probe microanalysis; characteristic X-ray; time-dependent intensity; beam current; beam diameter
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000479091500013
来源期刊	JOURNAL OF EARTH SCIENCE
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/259524
推荐引用方式 GB/T 7714	Zhang, Xing,Yang, Shuiyuan,Zhao, He,et al. Effect of Beam Current and Diameter on Electron Probe Microanalysis of Carbonate Minerals[J]. 中国科学院青藏高原研究所,2019,30(4).
APA	Zhang, Xing,Yang, Shuiyuan,Zhao, He,Jiang, Shaoyong,Zhang, Ruoxi,&Xie, Jing.(2019).Effect of Beam Current and Diameter on Electron Probe Microanalysis of Carbonate Minerals.JOURNAL OF EARTH SCIENCE,30(4).
MLA	Zhang, Xing,et al."Effect of Beam Current and Diameter on Electron Probe Microanalysis of Carbonate Minerals".JOURNAL OF EARTH SCIENCE 30.4(2019).