A new Si-28 single crystal: counting the atoms for the new kilogram definition
文献类型：期刊论文
| 作者 | Di Luzio, M; Fujii, K; Fujimoto, H; Fujita, K; Kolbe, M; Krumrey, M; Kuramoto, N; Massa, E; Mecke, M; Mizushima, S |
| 刊名 | METROLOGIA
 |
| 出版日期 | 2017 |
| 卷号 | 54期号:5页码:693-715 |
| 关键词 | Avogadro constant kilogram Planck constant enriched silicon molar mass surface characterisation interferometry |
| ISSN号 | 0026-1394 |
| DOI | 10.1088/1681-7575/aa7820 |
| 文献子类 | Article |
| 英文摘要 | A new single crystal from isotopically enriched silicon was used to determine the Avogadro constant N-A by the x-ray-crystal density method. The new crystal, named Si28-23Pr11, has a higher enrichment than the former 'AVO28' crystal allowing a smaller uncertainty of the molar mass determination. Again, two 1 kg spheres were manufactured from this crystal. The crystal and the spheres were measured with improved and new methods. One sphere, Si28kg01a, was measured at NMIJ and PTB with very consistent results. The other sphere, Si28kg01b, was measured only at PTB and yielded nearly the same Avogadro constant value. The mean result for both 1 kg spheres is N-A = 6.022 140 526(70) x 10(23) mol(-1) with a relative standard uncertainty of 1.2 x 10(-8). This value deviates from the Avogadro value published in 2015 for the AVO28 crystal by about 3.9(2.1) x 10(-8). Possible reasons for this difference are discussed and additional measurements are proposed. |
| 电子版国际标准刊号 | 1681-7575 |
| WOS关键词 | HIGHLY ENRICHED SI-28 ; SI-28-ENRICHED SILICON CRYSTAL ; RAY-FLUORESCENCE ANALYSIS ; AVOGADRO CONSTANT ; VOLUME MEASUREMENTS ; MASS MEASUREMENT ; PLANCK CONSTANT ; OPTICAL INTERFEROMETER ; ULTRATHIN SIO2 ; MOLAR-MASS |
| WOS研究方向 | Instruments & Instrumentation ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000407710900004 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/284847]  |
| 专题 | 高能物理研究所_多学科研究中心 |
| 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 | Di Luzio, M,Fujii, K,Fujimoto, H,et al. A new Si-28 single crystal: counting the atoms for the new kilogram definition[J]. METROLOGIA,2017,54(5):693-715. |
| APA | Di Luzio, M.,Fujii, K.,Fujimoto, H.,Fujita, K.,Kolbe, M.,...&Darlatt, E.(2017).A new Si-28 single crystal: counting the atoms for the new kilogram definition.METROLOGIA,54(5),693-715. |
| MLA | Di Luzio, M,et al."A new Si-28 single crystal: counting the atoms for the new kilogram definition".METROLOGIA 54.5(2017):693-715. |
入库方式： OAI收割
来源：高能物理研究所
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