Calibration of the pressure dependence of the R1 ruby fluorescence line to 195 kbar
- 1 June 1975
- journal article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 46 (6) , 2774-2780
- https://doi.org/10.1063/1.321957
Abstract
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.This publication has 15 references indexed in Scilit:
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