Tom.G said:Take a look at this site: https://lar.bnl.gov/properties/
You may have to find someone to translate electron mobility, drift velocities, and diffusion coefficients to something more usable to us civilians!
Above found with: https://www.google.com/search?&q=Electrical+conductivity+of+liquid+argon+at+low+pressure
phyzguy said:What exactly is your motivation or the application that prompts your question? I think liquid argon is, for all practical purpose, an insulator. It is used in particle physics experiments to detect high-energy particles. When a high energy particle makes a collision in the liquid argon, it creates free carriers which can be swept up and counted by a counter. So the stats on electron mobility, etc., refers to that application.
This might be useful:doctor_cat said:The aim is to study the propagation of RF waves in liquid argon detectors.
kimbyd said:Electrical conductivity is related to the Electron Mobility:
https://en.wikipedia.org/wiki/Electron_mobility#Relation_to_conductivity
However, this contains an important variable: the electron density. This density is not the total density of electrons in the substance, but rather the density of "free" electrons. Neutral, low-temperature/pressure Argon will not have any free electrons.
That said, I did find this source, which measured the electrical conductivity of Argon, Krypton, and Xenon at high pressures (and presumably temperatures):
https://aip.scitation.org/doi/abs/10.1063/1.1303633
They do find some conductivity, but it's not a simple relation: the conductivity depends exponentially upon temperature within certain experimental regimes (this is expected for substances with no free electrons). I can't access the full paper, so I don't know the details.
My guess is that the answer is that the conductivity is zero at low temperatures, but it's possible for Argon to become conductive at high pressures and temperatures.
That's a very good point. As I understand it, pure water is a pretty good insulator. Nearly all of water's conductivity stems from impurities.f95toli said:Granted, the effect of impurities will be different in a liquid; but I am pretty sure the basic principle still applies: the purity of the argon will be a crucial parameter
High power radio and radar transmitter tubes once used triple-distilled water as their cooling medium. Several are shown in a photo at the Museum of Radio and Technology website.kimbyd said:That's a very good point. As I understand it, pure water is a pretty good insulator. Nearly all of water's conductivity stems from impurities.
The electrical conductivity of liquid argon is approximately 1.1 x 10^-4 S/m at its boiling point of -185.9°C. This is a relatively low conductivity compared to other liquids.
The electrical conductivity of solid argon is much lower than that of liquid argon, with a value of approximately 10^-15 S/m. This is due to the difference in molecular structure and mobility of particles in the liquid and solid states.
The electrical conductivity of liquid argon is primarily affected by temperature, pressure, and impurities. As the temperature increases, the conductivity also increases. Higher pressures can also increase the conductivity, and impurities can either increase or decrease the conductivity depending on their type and concentration.
While liquid argon has a higher electrical conductivity than solid argon, it is still considered a poor conductor compared to other liquids. Therefore, it is not commonly used as an electrical conductor, but it can be used in certain applications such as in particle detectors and electronics cooling systems.
The electrical conductivity of liquid argon is typically measured using a conductivity meter or probe. The probe is inserted into the liquid and a small electrical current is passed through it. The resulting voltage and current are then used to calculate the conductivity using Ohm's law.