Relative dispersion of trapped ion granulations in sheared flows

Yusuke Kosuga, Sanae I. Itoh, Patrick H. Diamond, Kimitaka Itoh, Maxime Lesur

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The life time of trapped ion granulations (trapped ions correlated by resonance) in sheared flows is calculated. The dynamics of trapped ion granulations, in the presence of sheared flows, is formulated in terms of two point correlation function of phase space density fluctuations. The evolution equation is closed by a simplified closure calculation of the triplet term. Based on the closed equation, the life time of the relative dispersion of trapped ion granulations is calculated. The result shows that i.) a relevant time scale enters via a hybrid of decorrelation and shearing, (Δωcν′2y)1/3 and ii.) small scale singularities in the absence of collisional dissipation enters through logarithmic divergence.

Original languageEnglish
Article number3403018
JournalPlasma and Fusion Research
Volume9
Issue numberSPECIALISSUE.2
DOIs
Publication statusPublished - Jan 1 2014

Fingerprint

ions
life (durability)
space density
shearing
closures
divergence
dissipation

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

Cite this

Kosuga, Y., Itoh, S. I., Diamond, P. H., Itoh, K., & Lesur, M. (2014). Relative dispersion of trapped ion granulations in sheared flows. Plasma and Fusion Research, 9(SPECIALISSUE.2), [3403018]. https://doi.org/10.1585/pfr.9.3403018

Relative dispersion of trapped ion granulations in sheared flows. / Kosuga, Yusuke; Itoh, Sanae I.; Diamond, Patrick H.; Itoh, Kimitaka; Lesur, Maxime.

In: Plasma and Fusion Research, Vol. 9, No. SPECIALISSUE.2, 3403018, 01.01.2014.

Research output: Contribution to journalArticle

Kosuga, Y, Itoh, SI, Diamond, PH, Itoh, K & Lesur, M 2014, 'Relative dispersion of trapped ion granulations in sheared flows', Plasma and Fusion Research, vol. 9, no. SPECIALISSUE.2, 3403018. https://doi.org/10.1585/pfr.9.3403018
Kosuga, Yusuke ; Itoh, Sanae I. ; Diamond, Patrick H. ; Itoh, Kimitaka ; Lesur, Maxime. / Relative dispersion of trapped ion granulations in sheared flows. In: Plasma and Fusion Research. 2014 ; Vol. 9, No. SPECIALISSUE.2.
@article{79803b4dafdd44c6839b04edcc6c6069,
title = "Relative dispersion of trapped ion granulations in sheared flows",
abstract = "The life time of trapped ion granulations (trapped ions correlated by resonance) in sheared flows is calculated. The dynamics of trapped ion granulations, in the presence of sheared flows, is formulated in terms of two point correlation function of phase space density fluctuations. The evolution equation is closed by a simplified closure calculation of the triplet term. Based on the closed equation, the life time of the relative dispersion of trapped ion granulations is calculated. The result shows that i.) a relevant time scale enters via a hybrid of decorrelation and shearing, (Δωcν′2y)1/3 and ii.) small scale singularities in the absence of collisional dissipation enters through logarithmic divergence.",
author = "Yusuke Kosuga and Itoh, {Sanae I.} and Diamond, {Patrick H.} and Kimitaka Itoh and Maxime Lesur",
year = "2014",
month = "1",
day = "1",
doi = "10.1585/pfr.9.3403018",
language = "English",
volume = "9",
journal = "Plasma and Fusion Research",
issn = "1880-6821",
publisher = "The Japan Society of Plasma Science and Nuclear Fusion Research (JSPF)",
number = "SPECIALISSUE.2",

}

TY - JOUR

T1 - Relative dispersion of trapped ion granulations in sheared flows

AU - Kosuga, Yusuke

AU - Itoh, Sanae I.

AU - Diamond, Patrick H.

AU - Itoh, Kimitaka

AU - Lesur, Maxime

PY - 2014/1/1

Y1 - 2014/1/1

N2 - The life time of trapped ion granulations (trapped ions correlated by resonance) in sheared flows is calculated. The dynamics of trapped ion granulations, in the presence of sheared flows, is formulated in terms of two point correlation function of phase space density fluctuations. The evolution equation is closed by a simplified closure calculation of the triplet term. Based on the closed equation, the life time of the relative dispersion of trapped ion granulations is calculated. The result shows that i.) a relevant time scale enters via a hybrid of decorrelation and shearing, (Δωcν′2y)1/3 and ii.) small scale singularities in the absence of collisional dissipation enters through logarithmic divergence.

AB - The life time of trapped ion granulations (trapped ions correlated by resonance) in sheared flows is calculated. The dynamics of trapped ion granulations, in the presence of sheared flows, is formulated in terms of two point correlation function of phase space density fluctuations. The evolution equation is closed by a simplified closure calculation of the triplet term. Based on the closed equation, the life time of the relative dispersion of trapped ion granulations is calculated. The result shows that i.) a relevant time scale enters via a hybrid of decorrelation and shearing, (Δωcν′2y)1/3 and ii.) small scale singularities in the absence of collisional dissipation enters through logarithmic divergence.

UR - http://www.scopus.com/inward/record.url?scp=84899151991&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84899151991&partnerID=8YFLogxK

U2 - 10.1585/pfr.9.3403018

DO - 10.1585/pfr.9.3403018

M3 - Article

AN - SCOPUS:84899151991

VL - 9

JO - Plasma and Fusion Research

JF - Plasma and Fusion Research

SN - 1880-6821

IS - SPECIALISSUE.2

M1 - 3403018

ER -