Toward an international practical pressure scale: A proposal for an IPPS ruby gauge (IPPS-Ruby2020)
Journal Article
·
· High Pressure Research
- Argonne National Lab. (ANL), Argonne, IL (United States); Carnegie Inst. of Science, Argonne, IL (United States). High Pressure Collaborative Access Team (HPCAT)
- Univ. of Chicago, Argonne, IL (United States). Center for Advanced Radiation Sources
- CEA, DAM, DIF, Arpajon (France); Univ. Paris-Saclay, Bruyères-le-Châtel (France). Lab. Matière en Conditions Extrêmes
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sorbonne Univ., Paris (France)
- European Laboratory for Non-linear Spectroscopy (LENS), Florence, Italy
- QRate, Moscow (Russia); Russian Quantum Center, Skolkovo (Russia)
- California Institute of Technology (CalTech), Pasadena, CA (United States)
- Kumamoto Univ. (Japan). Shock Wave and Condensed Matter Research Center
- Columbia Univ., New York, NY (United States)
At the 26th AIRAPT conference in 2017, a task group was formed to work on an International Practical Pressure Scale (IPPS). This report summarizes the activities of the task group toward an IPPS ruby gauge. We have selected three different approaches to establishing the relation between pressure (P) and ruby R1-line shift (Δλ) with three groups of optimal reference materials for applying these approaches. Using a polynomial form of the second order, the recommended ruby gauge (referred as Ruby2020) is expressed by: , where λ0 is the wavelength of the R1-line near 694.25 nm at ambient condition. In June of 2020, the Executive Committee of AIRAPT endorsed the proposed Ruby2020. Finally, we encourage high-pressure practitioners to utilize Ruby2020 within its applicable pressure range (up to 150 GPa), so that pressure data can be directly compared across laboratories and amended consistently as better scales emerge in the future.
- Research Organization:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA)
- Grant/Contract Number:
- AC52-07NA27344
- OSTI ID:
- 1861244
- Alternate ID(s):
- OSTI ID: 1660709
- Report Number(s):
- LLNL-JRNL-826192; 1040661
- Journal Information:
- High Pressure Research, Journal Name: High Pressure Research Journal Issue: 3 Vol. 40; ISSN 0895-7959
- Publisher:
- Taylor & FrancisCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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