Kaur M, Barbano LJ, Suen-Lewis EM, Shrock JE, Light AD, Brown MR, Schaffner DA. Measuring the equations of state in a relaxed magnetohydrodynamic plasma.
Phys Rev E 2018;
97:011202. [PMID:
29448396 DOI:
10.1103/physreve.97.011202]
[Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Indexed: 11/07/2022]
Abstract
We report measurements of the equations of state of a fully relaxed magnetohydrodynamic (MHD) laboratory plasma. Parcels of magnetized plasma, called Taylor states, are formed in a coaxial magnetized plasma gun, and are allowed to relax and drift into a closed flux conserving volume. Density, ion temperature, and magnetic field are measured as a function of time as the Taylor states compress and heat. The theoretically predicted MHD and double adiabatic equations of state are compared to experimental measurements. We find that the MHD equation of state is inconsistent with our data.
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