On the probability distribution function of particle density at the edge of fusion devices

F. Sattin, N. Vianello, M. Valisa

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Abstract

The probability distribution function Pn(n) of the particle density at the edge of several magnetic fusion devices, including tokamaks, stellarators, and linear devices, is known to be strongly non-Gaussian. In this paper experimental results from RFX reversed field pinch (RFP) [G. Rostagni, Fusion Eng. Des. 25, 301 (1995)] are presented, confirming the universal shape of Pnalso for RFP's. An explanation for the form of Pnis attempted, on the basis of simple conservation equations. The model result is shown to fit fairly well empirical data in a few different experimental scenarios. © 2004 American Institute of Physics.
Original languageEnglish
Article number6
Pages (from-to)5032 - 5037
Number of pages6
JournalPhysics of Plasmas
Volume11
Issue number11
DOIs
Publication statusPublished - Nov 2004
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

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