A Symposium on International Practical Pressure Scale
The first AIRAPT Task Group on the International Practical Pressure
Scale (IPPS) was created at the 6th AIRAPT Conference in 1977; the group
recommended the ruby method, the Decker equation of state for NaCl, and a set of
pressure fixed points for opaque presses be used as practical pressure reference
standards. Since then, several major developments have occurred in high pressure
technology. For examples, pressure has been significantly expanded to multi-Mbar
ranges; in situ x-ray probes allow for pressure determination from the measured
volumes of the materials based on the knowledge of their equations of state;
experimental programs to establish primary pressure scales (e.g., in-situ elasticity
measurements Brillouin scattering and ultrasonic techniques) have emerged to
directly determine pressure without resorting to any prior pressure standard.
Numerous attempts have been made for new pressure calibrations, new pressure fixed
points, ruby scale refinement, and internally consistent equations of state for a number
of materials. These developments call for another step toward an IPPS, in order to set
a reference standard and to make the information exchange from different laboratories
in orderly manner. The aim of the symposium is to review the progress in the pressure calibration
in the last decade, and to discuss broadly the calibrants that can serve as anchors of an
IPPS. Factors such as practicality, sharpness of the transitions, thermodynamic
equilibrium conditions, and chemical inertness will be evaluated for any proposed
references. Meanwhile, we propose to establish a Task Group of 10-12 people at the
26th AIRAPT to work for an international agreement on an IPPS. Guoyin Shen, gshen@ciw.edu Yanbin Wang, wang@cars.uchicago.edu Stefan Klotz, Stefan.Klotz@impmc.jussieu.fr Taku Tsuchiya, tsuchiya.taku.mg@ehime-u.ac.jp
Frederic Datchi, Alex Goncharov, Eugene Gregoryanz, Kurt Leinenweber, Baosheng Li, Ho-kwang Mao, Tsutomu Mashimo, Takeshi Sakai, Karl Syassen, DaisukeYamazaki, Issac Silvera
Important Dates
AIRAPT26 & ACHPR8 & CHPC19: Aug. 19th (Sat) to 24th (Thu), 2017 (Aug. 19 to 23, 2017: Scientific Program)
