Pressure Measurement Made by the Utilization of Ruby Sharp-Line Luminescence

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Science  21 Apr 1972:
Vol. 176, Issue 4032, pp. 284-285
DOI: 10.1126/science.176.4032.284


A rapid, convenient technique for precision pressure measurement in the diamond-anvil high-pressure cell, which makes use of the sharp-line (R-line) luminescence of ruby, has been developed. The observed shift is -0.77 ±0.03 reciprocal centimeters per kilobar for R1 and -0.84± 0.03 reciprocal centimeters per kilobar for R2 to lower energy and is approximately linear in the range studied (to 22 kilobars). Line-broadening has been observed in some instances and has been tentatively identified with nonhydrostatic conditions surrounding the ruby sample.

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