Document Type

Article

Journal Title

Physical Review Letters

Volume Number

56

Issue Number

23

First Page

2485

Last Page

2488

Version

Publisher PDF: the final published version of the article, with professional formatting and typesetting

Original Citation

McWilliams, R. and D.P. Sheehan, Experimental measurements of phase space; Phys. Rev. Lett. 56 2485 (1986).

Publication Date

6-1986

Disciplines

Physics

Abstract

Direct measurements of integrated phase-space densities, e.g., f(x,vy,t), have been made in an experiment. Using spectroscopically active ions, measurements in a plasma show the ion response, fi(x,v,t), to linear and nonlinear waves and phase-space particle bunching. Time-resolved measurements show coherent and incoherent phase-space density changes in the presence of waves, indicating that transitions to turbulence and chaos may be studied. The time, space, and velocity-space resolution may allow experimental tests of predictions from the Boltzmann equation.

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