On the Probability distribution function of particle density at the edge of fusion devices
Plasma Physics
2007-05-23 v2
Abstract
The Probability Distribution Function (PDF) 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 we present experimental results from RFX Reversed Field Pinch [G. Rostagni, Fus. Eng. Design 25, 301 (1995)], confirming the universal shape of Pn also for RFP's. An explanation for the form of Pn is attempted, on the basis of simple conservation equations. The model result is shown to fitted fairly well empirical data in a few different experimental scenarios.
Keywords
Cite
@article{arxiv.physics/0407006,
title = {On the Probability distribution function of particle density at the edge of fusion devices},
author = {F. Sattin and N. Vianello and M. Valisa},
journal= {arXiv preprint arXiv:physics/0407006},
year = {2007}
}
Comments
16 pages. Final version, accepted by Phys. Plasmas