Position of the Frenkel Line in supercritical nitrogen at 25°C, 75°C, 100°C and 125°C

Al-Maiyah, Abdullah

Abstract

The pressure at which the Frenkel line was crossed in supercritical nitrogen was investigated at different temperatures via Raman spectroscopy, using a diamond anvil cell to control pressure and ruby or Sm:YAG as a pressure scale. The results for the lower two temperatures clearly follow the expected trend of a higher pressure
crossing at higher temperature, but the last two gave inaccurately low results, probably caused by the high temperatures lowering the pressure scale’s fluorescence intensity to the point of making the peak wavelength difficult to accurately determine. Nonetheless, the results do suggest higher temperatures cause higher pressure Frenkel line encounters, as expected.

Citation

Al-Maiyah, A. (2023). Position of the Frenkel Line in supercritical nitrogen at 25°C, 75°C, 100°C and 125°C. (Thesis). The University of Salford

• Thesis Type: Thesis
• Deposit Date: Aug 17, 2023
• Publicly Available Date: Oct 30, 2023
• Award Date: Sep 29, 2023