An official website of the United States government
Here’s how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Electrostriction of Near-Critical SF6 in Microgravity
Published
Author(s)
G A. Zimmerli, R A. Wilkinson, R A. Ferrell, Michael R. Moldover
Abstract
We used interferometry to measure the electric-field-induced (I.e., electrostrictive) increase of the density of sulfur hexafluoride near its critical point. The results at the temperatures Tc + 5 mK, Tc + 10 mK, and Tc + 30 mK, with Tc = 319 K, agree with a calculation based on the Clausius-Mossotti relation and the restricted cubic model equation of state. These measurements were performed in microgravity so that the electrostrictive density changes (< 3.5 % in this work) would not be complicated by stratification of the fluid s density induced by the Earth s gravity.
Citation
Physical Review Letters
Volume
82
Issue
No. 26
Pub Type
Journals
Keywords
critical phenomena, critical point, electrostriction, equation of state, sulfur hexafluoride
Citation
Zimmerli, G.
, Wilkinson, R.
, Ferrell, R.
and Moldover, M.
(1999),
Electrostriction of Near-Critical SF<sub>6</sub> in Microgravity, Physical Review Letters
(Accessed June 5, 2023)