Highest Pressure Gases: Physics Experiments & Properties

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Discussion Overview

The discussion centers on the highest pressures achieved for gases in laboratory settings, exploring the properties of such gases and any associated phase changes. Participants express interest in high-pressure physics specifically related to gases, as opposed to solids or liquids, and inquire about relevant experiments and literature.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant seeks information on high-pressure gas experiments and any new properties observed, noting a lack of resources compared to high-pressure studies on solids and liquids.
  • Another participant suggests that achieving high pressures typically results in gases transitioning to solid states.
  • A third participant points out a potential grammatical issue in the original inquiry, asking for clarification on the intended meaning.
  • A participant shares references to studies on high-pressure gas targets used in accelerator facilities, highlighting the design considerations for gas cells under high-pressure conditions.
  • One participant questions whether plasma should be included in the discussion, mentioning that inertial confinement fusion reaches very high pressures briefly during fuel pellet implosion.

Areas of Agreement / Disagreement

Participants do not reach a consensus on the inclusion of plasma in the discussion of high-pressure gases, and there are differing views on the implications of high pressure on gas states, with some suggesting solidification while others explore the properties of gases under pressure.

Contextual Notes

The discussion lacks specific definitions of "high pressure" and does not clarify the conditions under which gases may exhibit unique properties or phase changes. There are also unresolved questions regarding the relevance of plasma in this context.

Who May Find This Useful

Researchers and students interested in high-pressure physics, gas properties, and experimental design in accelerator physics may find this discussion relevant.

Albertgauss
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Does anyone know where I can physics related to the highest pressures that have been achieved for any gas in a lab, and if any new properties of such gases have been seen? There is all kinds of high pressure physics for solids and liquid states of matter, but I can't find anything about high pressure experiments on Gases, phase changes, etc. Also, I don't mean plasma, unless its part of a phase change of a system where high pressure on gases has been studied.
 
Physics news on Phys.org
In most cases getting pressure high enough makes things solid.
 
"Does anyone know where I can (missing verb?) physics related to the highest pressures ..."

Care to complete the thought?
 
Here are two that may interest you:

Title:Thermomechanical design of a static gas target for electron accelerators
Authors: B. Brajuskovic, T. O'Connor, R. J. Holt, J. Reneker, D. Meekin, P. Solvignon
(Submitted on 25 Jun 2013)
Abstract: Gas targets are often used at accelerator facilities. A design of high-pressure gas cells that are suitable for hydrogen and helium isotopes at relatively high electron beam currents is presented. In particular, we consider rare gas targets, $^3$H$_2$ and $^3$He. In the design, heat transfer and mechanical integrity of the target cell are emphasized. ANSYS 12 was used for the thermo-mechanical studies of the target cell. Since the ultimate goal in this study was to design a gas target for use at the Jefferson Laboratory (JLab), particular attention is given to the typical operating conditions found there. It is demonstrated that an aluminum alloy cell can meet the required design goals.
http://arxiv.org/abs/1306.6000

A High-Pressure Polarized $^3$He Gas Target for Nuclear Physics Experiments Using A Polarized Photon Beam
http://arxiv.org/abs/0911.3647
 
Does plasma count? Inertial confinement fusion achieves some pretty high pressures for a very short time, when the fuel pellet is imploded.
 

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