|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Chinese SPRIGT realizes high temperature stability in the range of 5–25 K显示文摘The unit of thermodynamic temperature,the kelvin,is one of the seven base units of International System of Units.High accuracy measurements of thermodynamic temperature in the lowtemperature range,namely below the neon triple point at24.5561 K,are of strategic significance for the development of | Bo Gao Changzhao Pan Laurent Pitre Yanyan Chen Haiyang Zhang Yaonan Song Hui then Wenjing Liu Dongxu Han Ercang Luo | 2018 | Science Bulletin2018，63，12： | 3 |
| 2 | 高导无氧铜等温压缩系数推算模型研究显示文摘建立了高导无氧铜等温压缩系数推算模型,适用温度范围为5~300 K。通过拟合室温区(260~280 K)、低温区(140~160 K)和深低温区(10~30 K)的高导无氧铜等温压缩系数数据,获得了三组推算模型。在相应条件下,各模型的外推结果均优于文献模型。三组推算模型的平均绝对相对偏差分别为0.199%、0.074%和3.014%。低温区模型推算结果最好,高导无氧铜等温压缩系数在5~25 K之间相对偏差均在0.060%以内,平均绝对相对偏差为0.048%,可满足该温区高导无氧铜等温压缩系数计算准确度的要求。 | 刘文静 张海洋 高波 罗二仓 Laurent Pitre | 2022 | 真空与低温2022，28，5： | 1 |
| 3 | Investigation of High-Stability Temperature Control in Primary Gas Thermometry显示文摘We presented a relationship between the temperature control and measurement stability limit and the temperature resolution,particularly for using rhodium-iron resistance thermometers and AC resistance bridges.Based on this,temperature control was investigated and demonstrated in primary gas thermometry under various working conditions.With optimized parameters,micro-Kelvin level temperature control stability was realized in the temperature region from 5 K to 24.5 K.The temperature control stabilities are better than 8μK over 180 h with an integration time of 33.6 s in the concerned temperature range,closing to the limit that the sensors and the instruments can control and measure.These stabilities were significantly improved about(44±8)%at 24.5 K and(70±7)%at 5 K comparing with our previous work(Chen et al.,Cryogenics,2019,97:1–6). | HU Jiangfeng ZHANG Haiyang SONG Yaonan PAN Changzhao GAO Bo LIU Wenjing HAN Dongxu ZHANG Zhen LUO Ercang PITRE Laurent | 2022 | Journal of Thermal Science2022，31，3： | 1 |
| 4 | 4.3 K~299 K温区Cu-ETP热膨胀系数原位实验测量研究显示文摘采用多模式微波谐振法,开展了定压气体折射率基准测温系统中谐振腔材料电解精炼韧铜(Cu-ETP)线性热膨胀系数的高精度原位实验测量及其不确定度分析研究,温度范围为4.3~299 K.针对不同的温度区间,采用了降温法(5~299 K)和控温法(4.3~26 K)两种实验测量方案,通过降温法测得的线性热膨胀系数标准不确定度优于2.2×10^(−7)K^(−1),其中,重复性是其测量不确定度的主要来源;通过控温法测得的线性热膨胀系数标准不确定度优于2.9×10^(−9)K^(−1),微波模式一致性和重复性是其测量不确定度的两大主要来源.由于控温稳定性高、微波测量噪声低,控温法所获得的线性热膨胀系数结果更为精确.最后,按照温区范围进一步发展了该系统内Cu-ETP材料线性热膨胀系数的计算方程,实现了实验数据与温度的高精度关联. | 刘文静 张海洋 高波 郑嘉熹 韩东旭 罗二仓 PITRE Laurent | 2023 | 工程科学学报2023，45，3： | 1 |
| 5 | A high-stability quasi-spherical resonator in SPRIGT for microwave frequency measurements at low temperatures显示文摘To meet the de ma nds of high stability and sustainable temperature measurements over time,TIPC-CAS in China and LNE-Cnam in France have jointly developed single-pressure refractive-index gas thermometiy(SPR1GT),which is expected to be an alternative primary thermometiy because of its 0.25 mK accuracy and high measurement speeds. | Haiyang Zhang Wenjing Liu Bo Gao Yanyan Chen Changzhao Pan Yaonan Song Hui Chen Dongxu Han Jiangfeng Hu Ercang Luo Laurent Pitre | 2019 | Science Bulletin2019，64，5： | 0 |
| 6 | Ultra-stable pressure is realized for Chinese single pressure refractive index gas thermometry in the range 30–90 kPa显示文摘The unit of thermodynamic temperature,the kelvin,is one of the seven base units of International System of Units.The international temperature scaIe of 1990 (ITS-90)is a practical temperature scale used worldwide to approximate thermodynamic tempera- ture T by ITS-90 temperature T90.The primary thermometry calibration facilities based on thermodynamic temperature standards are the foundation of ITS 90 and temperature measurement in a country.China has developed primary thermometry in the temperature region down to the neon triple point 24.5561 K estimated by ITS-90,but it has not yet set up any primary thermometry at lower temperatures. | Dongxu Han Bo Gao Hui Chen Pascal Gambette Haiyang Zhang Changzhao Pan Yaonan Song Wenjing Liu Jiangfeng Hu Bo Yu Yingwen Liu Ercang Luo Laurent Pitre | 2018 | Science Bulletin2018，63，24： | 0 |
| 7 | 5~25 K深低温区交流电桥高稳定控温影响因素研究显示文摘控温稳定性是影响深低温区热力学温度测量不确定度、热力学温度国际比对可靠性以及温度标定水平的关键因素之一。为探究影响深低温区高稳定性温度控制的影响因素,在前期研究基础上,本文设计了温度计引线电阻和标准电阻控温实验方案,并在5 K和25 K开展了相关控温实验,定量评估了温度计引线电阻和标准电阻对深低温区温度测量平均值和控温稳定性的扰动影响。结果表明:温度测量平均值几乎不受引线电阻和标准电阻的影响;控温稳定性会随引线电阻和标准电阻而变化,引线电阻越低深低温区控温稳定性越高,并存在一个最佳匹配的标准电阻。本文研究结果可为构建深低温区高稳定性的低温工作环境提供参考。 | 宋耀楠 孔祥杰 张海洋 高波 罗二仓 PITRE Laurent | 2023 | 真空与低温2023，29，4： | 0 |
| 8 | Cu-ETP等温压缩系数原位实验测量研究显示文摘电解精炼韧铜(Cu-ETP)通常用于制作基准级温度计中的核心部件微波谐振腔,其等温压缩系数对高准确度的热力学温度测量至关重要。但由于缺乏Cu-ETP在低温下的相关物性数据,常用高导无氧铜(OFHC)的等温压缩系数来近似Cu-ETP的等温压缩系数。为了获得Cu-ETP等温压缩系数的原位实验测量结果,在定压气体折射率基准级温度计实验系统的基础上,采用多模式微波谐振法测得了氖三相点(24.5561 K)处Cu-ETP的等温压缩系数,并计算了其不确定度。最终结果与通过间接计算得到的同温度下OFHC等温压缩系数之间具有较好的一致性且不确定度水平相当。参考氖三相点处Cu-ETP等温压缩系数的测量结果,获得了5~24 K温区内Cu-ETP等温压缩系数外推值。极低温区Cu-ETP等温压缩系数原位测量结果和外推计算结果可为热力学温度测量、气体基本热物性测量等提供参考数据。 | 杨添通 宋耀楠 孔祥杰 张海洋 高波 PITRE Laurent | 2023 | 真空与低温2023，29，4： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员