SrB4O7:Sm2+ fluorescence improves the accuracy of temperature measurements in externally heated diamond anvil cells

doi:10.1063/5.0099000

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	SrB4O7:Sm2+ fluorescence improves the accuracy of temperature measurements in externally heated diamond anvil cells
	Jing, Q; Zhang, Y; Liu, L; Xi, F; Li, Y; Li, X; Yang, D; Jiang, S; Geng, H; Chen, X; Li, S; Gao, J; He, Q; Li, J; Tan, Y; Yu, Y; Jin, K; Wu, Q
	2022
发表期刊	REVIEW OF SCIENTIFIC INSTRUMENTS (IF:1.515[JCR-2016],1.616[5-Year])
ISSN	0034-6748
EISSN	1089-7623
卷号	93 期号:12 页码:123904
条目编号	IHEP00035322
文章类型	Article
摘要	The sample temperature in an externally heated diamond anvil cell (EHDAC) is generally measured by a thermocouple fixed to the pavilions of diamond anvils, ignoring the temperature difference between the thermocouple and the sample. However, the measured temperature depends strongly on the placement of the thermocouple, thus seriously reducing the accuracy of the temperature measurement and hindering the use of EHDAC in experiments requiring precise temperature measurements, such as high-pressure melting and phase-diagram investigations. In this study, the full width at half maximum (FWHM) of the 0-0 fluorescence line of strontium borate doped with bivalent samarium ions (SrBO4:Sm2+, SBO) is found to be highly sensitive to temperature and responds extremely rapidly to small temperature fluctuations, which makes it an excellent temperature indicator. We propose herein a precise method to measure temperature that involves measuring the FWHM of the 0-0 fluorescence line of SBO. This method is used to correct the temperature discrepancy between the thermocouple and the sample in an EHDAC. These corrections significantly improve the accuracy of temperature measurements in EHDACs. The accuracy of this method is verified by measuring the melting point of tin at ambient pressure. We also use this method to produce a tentative elementary phase diagram of tin up to 109 GPa and 495 K. This method facilitates high-pressure, high-temperature experiments demanding accurate temperature measurements in various disciplines. The study also discusses, in general, the experimental approach to measuring temperature. Published under an exclusive license by AIP Publishing.
DOI	10.1063/5.0099000
收录类别	ADS
语种	英语
WOS记录号	WOS:000895862500001
ADS Bibcode	2022RScI...93l3904J
ADS URL	https://ui.adsabs.harvard.edu/abs/2022RScI...93l3904J
ADS引文	https://ui.adsabs.harvard.edu/abs/2022RScI...93l3904J/citations
引用统计	正在获取... 被引频次：0 [ADS]
文献类型	期刊论文
条目标识符	https://ir.ihep.ac.cn/handle/311005/300312
专题	多学科研究中心实验物理中心加速器中心硬X射线调制望远镜卫星
作者单位	中国科学院高能物理研究所
第一作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	Jing, Q,Zhang, Y,Liu, L,et al. SrB4O7:Sm2+ fluorescence improves the accuracy of temperature measurements in externally heated diamond anvil cells[J]. REVIEW OF SCIENTIFIC INSTRUMENTS,2022,93(12):123904.
APA	Jing, Q.,Zhang, Y.,Liu, L.,Xi, F.,Li, Y.,...&Wu, Q.(2022).SrB4O7:Sm2+ fluorescence improves the accuracy of temperature measurements in externally heated diamond anvil cells.REVIEW OF SCIENTIFIC INSTRUMENTS,93(12),123904.
MLA	Jing, Q,et al."SrB4O7:Sm2+ fluorescence improves the accuracy of temperature measurements in externally heated diamond anvil cells".REVIEW OF SCIENTIFIC INSTRUMENTS 93.12(2022):123904.