Outputs (35)

All-optical method to directly measure the pressure–volume–temperature equation of state of fluids in the diamond anvil cell (2024)
Journal Article
Proctor, J. E., Robertson, C. E. A., Jones, L. J., Phillips, J., Watson, K., Dabburi, Y., & Moss, B. (2024). All-optical method to directly measure the pressure–volume–temperature equation of state of fluids in the diamond anvil cell. Physics of Fluids, 36(8), 087145. https://doi.org/10.1063/5.0220503

We have developed a new all-optical method to directly measure the pressure–volume–temperature (PVT) equation of state (EOS) of fluids and transparent solids in the diamond anvil high pressure cell by measuring the volume of the sample chamber. Our m... Read More about All-optical method to directly measure the pressure–volume–temperature equation of state of fluids in the diamond anvil cell.

Generally applicable physics-based equation of state for liquids. (2024)
Journal Article
Proctor, J. E., & Trachenko, K. (2024). Generally applicable physics-based equation of state for liquids. Reports on Progress in Physics, 87(9), Article 098001. https://doi.org/10.1088/1361-6633/ad6a80

Physics-based first-principles pressure-volume-temperature equations of state (EOS) exist for solids and gases but not for liquids due to the long-standing fundamental problems involved in liquid theory. Current EOS models that are applicable to liqu... Read More about Generally applicable physics-based equation of state for liquids..

Position of the Frenkel Line in supercritical nitrogen at 25°C, 75°C, 100°C and 125°C (2023)
Thesis
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

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

A comparison of different Fourier transform procedures for analysis of diffraction data from noble gas fluids (2023)
Journal Article
Proctor, J. E., Pruteanu, C. G., Moss, B., Kuzovnikov, M. A., Ackland, G. J., Monk, C. W., & Anzellini, S. (2023). A comparison of different Fourier transform procedures for analysis of diffraction data from noble gas fluids. Journal of Applied Physics, 134(11), Article 114701. https://doi.org/10.1063/5.0161033

A comparison is made between the three principal methods for the analysis of neutron and x-ray diffraction data from noble gas fluids by direct Fourier transform. All three methods (standard Fourier transform, Lorch modification, and Soper–Barney mod... Read More about A comparison of different Fourier transform procedures for analysis of diffraction data from noble gas fluids.

Derivation of the Field Due to a Magnetic Dipole Without Use of the Vector Potential (2022)
Journal Article
Proctor, J. E., & Gould, H. T. (2023). Derivation of the Field Due to a Magnetic Dipole Without Use of the Vector Potential. Physics Teacher, 61(1), 40-42. https://doi.org/10.1119/5.0077127

The mathematical form of the magnetic field due to a current loop, and the fact that it is identical to the electric field due to an electric dipole in the far field, are fundamental to our understanding of electromagnetism. While undergraduate level... Read More about Derivation of the Field Due to a Magnetic Dipole Without Use of the Vector Potential.

Krypton and the fundamental flaw of the Lennard-Jones Potential (2022)
Journal Article
Pruteanu, C., Loveday, J., Ackland, G., & Proctor, J. (2022). Krypton and the fundamental flaw of the Lennard-Jones Potential. Journal of Physical Chemistry Letters, 13(35), 8284-8289. https://doi.org/10.1021/acs.jpclett.2c02004

We have performed a series of neutron scattering experiments on supercritical krypton. Our data and analysis allow us to characterize the Frenkel line crossover in this model monatomic fluid. The data from our measurements was analyzed using Empirica... Read More about Krypton and the fundamental flaw of the Lennard-Jones Potential.

Phase diagram of ethane above 300 K (2022)
Journal Article
Proctor, J., Spender, J., & Gould, H. (2022). Phase diagram of ethane above 300 K. Journal of Physical Chemistry C, 126(26), 10792-10799. https://doi.org/10.1021/acs.jpcc.2c00875

We have measured the melting curve of ethane from 300 to 450 K. Our results indicate that to describe all melting curve data above the triple point, it is necessary to account for a kink in the melting curve where the phase III–phase IV solid–solid t... Read More about Phase diagram of ethane above 300 K.

Characterization of the high-pressure and high-temperature phase diagram and equation of state of chromium. (2022)
Journal Article
Anzellini, S., Errandonea, D., Burakovsky, L., Proctor, J., Turnbull, R., & Beavers, C. (2022). Characterization of the high-pressure and high-temperature phase diagram and equation of state of chromium. Scientific reports, 12(1), 6727. https://doi.org/10.1038/s41598-022-10523-2

The high-pressure and high-temperature phase diagram of chromium has been investigated both experimentally (in situ), using a laser-heated diamond-anvil cell technique coupled with synchrotron powder X-ray diffraction, and theoretically, using ab ini... Read More about Characterization of the high-pressure and high-temperature phase diagram and equation of state of chromium..

High pressure photoluminescence of bismuth-doped yttria-alumina-silica glass (2022)
Journal Article
Hughes, M., McMaster, R., Proctor, J., Hewak, D., Suzuki, T., & Oshidi, Y. (2022). High pressure photoluminescence of bismuth-doped yttria-alumina-silica glass. High Pressure Research, https://doi.org/10.1080/08957959.2022.2044031

We report the effects of high pressure, up to 10.45 GPa, on the photoluminescence of Bi-doped yttria-alumina-silica (Bi:YAlSi) glass under 532 nm excitation. We identify three emission bands attributed to Bi3+, Bi+ and the controversial NIR emitting... Read More about High pressure photoluminescence of bismuth-doped yttria-alumina-silica glass.

Structural markers of the Frenkel line in the proximity of Widom lines (2021)
Journal Article
Pruteanu, C., Proctor, J., Alderman, O., & Loveday, J. (2021). Structural markers of the Frenkel line in the proximity of Widom lines. Journal of Physical Chemistry B, 125(31), 8902-8906. https://doi.org/10.1021/acs.jpcb.1c04690

We have performed a neutron scattering experiment on supercritical
uid nitrogen
at 160 K (1.27 TC) over a wide pressure range (7.8 MPa / 0.260 g/ml to 125 MPa /
0.805 g/ml). This has enabled us to study the process by which nitrogen changes from... Read More about Structural markers of the Frenkel line in the proximity of Widom lines.