The pressure dependance of ruby fluorescence lifetime as a new optical method for pressure measurement

Abstract It is shown that the ruby fluorescence lifetime TR(2E → 4A2 transition) exhibits (at least up to 200kbar) a linear rise with pressure, the slope being 0.0312 ± 0.0005ms/kbar. The possible use of this phenomenon as an alternative method for high pressure measurement in diamond anvil cell has been discussed.