dorsal/arxiv
View SchemaEvidence of Levy stable process in tokamak edge turbulence
| Authors | R. Jha, P. K. Kaw, D. R. Kulkarni, J. C. Parikh, ADITYA Team |
|---|---|
| Categories | |
| ArXiv ID | physics/0110051 |
| URL | https://arxiv.org/abs/physics/0110051 |
Abstract
In an effort to understand the fundamental physics of turbulent transport of particles and heat in a tokamak, the floating potential fluctuations in the the scrape-off layer plasma of ohmically heated ADITYA tokamak are analysed for self-similarity using distribution function approach. It is observed that the distribution function of a sum of n data points converges to a Levy distribution of scale index, alpha=1.111 for n < 40 and alpha=2.0 for larger n. In both scaling ranges, the edge fluctuation is self-similar. This observation is backed by several supporting evidences. The results indicate that the small scale fluctuations transport matter and heat dominantly by convection whereas the transport due to large scale flucuations is by a diffusive process.
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"date_created": "2026-03-02T18:00:35.850000Z",
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"abstract": "In an effort to understand the fundamental physics of turbulent transport of\nparticles and heat in a tokamak, the floating potential fluctuations in the the\nscrape-off layer plasma of ohmically heated ADITYA tokamak are analysed for\nself-similarity using distribution function approach. It is observed that the\ndistribution function of a sum of n data points converges to a Levy\ndistribution of scale index, alpha=1.111 for n \u003c 40 and alpha=2.0 for larger n.\nIn both scaling ranges, the edge fluctuation is self-similar. This observation\nis backed by several supporting evidences. The results indicate that the small\nscale fluctuations transport matter and heat dominantly by convection whereas\nthe transport due to large scale flucuations is by a diffusive process.",
"arxiv_id": "physics/0110051",
"authors": [
"R. Jha",
"P. K. Kaw",
"D. R. Kulkarni",
"J. C. Parikh",
"ADITYA Team"
],
"categories": [
"physics.plasm-ph",
"physics.data-an"
],
"title": "Evidence of Levy stable process in tokamak edge turbulence",
"url": "https://arxiv.org/abs/physics/0110051"
},
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