Calibration of the pressure dependence of the R1 ruby fluorescence line to 195 kbar

✍ Scribed by Piermarini, G. J.; Block, S.; Barnett, J. D.; Forman, R. A.

• Book ID: 115533309
• Publisher: American Institute of Physics
• Year: 1975
• Tongue: English
• Weight: 840 KB
• Volume: 46
• Category: Article
• ISSN: 0021-8979
• DOI: 10.1063/1.321957

✦ Synopsis

The pressure dependence of the R1 ruby fluorescence line has been calibrated at 25 °C against the compression of NaCl. Pressures are determined using the Decker equation of state for NaCl. The dependence is linear to 195 kbar following the equation PNaCl=2.746(Δλ), where P is in kbar and Δλ in Å. The uncertainty in the value of the slope, dp/dλ, expressed in terms of a 95% confidence interval is 2.746±0.014 kbar Å−1. The coefficient of the quadratic term (Δλ)2 is not significantly different from zero; and the quadratic term makes indeed a negligible contribution to the fit. Taking into account the reported uncertainty associated with the Decker equation of state for NaCl, the value of the slope is 2.740±0.016 kbar Å−1 within a 95% confidence interval.