Effect of ion loss on ICRF heating

K. Itoh, Sanae Itoh, A. Fukuyama

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

The effect of spatial loss on ICRF (ion cyclotron range of frequency) wave heating is studied. A simple model for the energy-dependent loss term is adopted in the Fokker-Planck equation. The case of the minority ion heating by fundamental cyclotron resonance is analysed. It is found that the high energy particle loss imposes a limit on the heating power density, above which an increase in the heating power does not raise the energy transfer to the bulk particles, i.e. the heating efficiency deteriorates. This power limit is serious for losses with strong energy dependence such as ripple diffusion. Small spatial loss can annihilate the increment of the fusion reaction by tail generation.

Original languageEnglish
Pages (from-to)779-787
Number of pages9
JournalNuclear Fusion
Volume28
Issue number5
DOIs
Publication statusPublished - Jan 1 1988

Fingerprint

cyclotrons
heating
ions
Fokker-Planck equation
minorities
cyclotron resonance
ripples
particle energy
radiant flux density
fusion
energy transfer
energy

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Condensed Matter Physics

Cite this

Itoh, K., Itoh, S., & Fukuyama, A. (1988). Effect of ion loss on ICRF heating. Nuclear Fusion, 28(5), 779-787. https://doi.org/10.1088/0029-5515/28/5/003

Effect of ion loss on ICRF heating. / Itoh, K.; Itoh, Sanae; Fukuyama, A.

In: Nuclear Fusion, Vol. 28, No. 5, 01.01.1988, p. 779-787.

Research output: Contribution to journalArticle

Itoh, K, Itoh, S & Fukuyama, A 1988, 'Effect of ion loss on ICRF heating', Nuclear Fusion, vol. 28, no. 5, pp. 779-787. https://doi.org/10.1088/0029-5515/28/5/003
Itoh, K. ; Itoh, Sanae ; Fukuyama, A. / Effect of ion loss on ICRF heating. In: Nuclear Fusion. 1988 ; Vol. 28, No. 5. pp. 779-787.
@article{f0a7754f9c6f429a86a3b36f1ebb64ec,
title = "Effect of ion loss on ICRF heating",
abstract = "The effect of spatial loss on ICRF (ion cyclotron range of frequency) wave heating is studied. A simple model for the energy-dependent loss term is adopted in the Fokker-Planck equation. The case of the minority ion heating by fundamental cyclotron resonance is analysed. It is found that the high energy particle loss imposes a limit on the heating power density, above which an increase in the heating power does not raise the energy transfer to the bulk particles, i.e. the heating efficiency deteriorates. This power limit is serious for losses with strong energy dependence such as ripple diffusion. Small spatial loss can annihilate the increment of the fusion reaction by tail generation.",
author = "K. Itoh and Sanae Itoh and A. Fukuyama",
year = "1988",
month = "1",
day = "1",
doi = "10.1088/0029-5515/28/5/003",
language = "English",
volume = "28",
pages = "779--787",
journal = "Nuclear Fusion",
issn = "0029-5515",
publisher = "IOP Publishing Ltd.",
number = "5",

}

TY - JOUR

T1 - Effect of ion loss on ICRF heating

AU - Itoh, K.

AU - Itoh, Sanae

AU - Fukuyama, A.

PY - 1988/1/1

Y1 - 1988/1/1

N2 - The effect of spatial loss on ICRF (ion cyclotron range of frequency) wave heating is studied. A simple model for the energy-dependent loss term is adopted in the Fokker-Planck equation. The case of the minority ion heating by fundamental cyclotron resonance is analysed. It is found that the high energy particle loss imposes a limit on the heating power density, above which an increase in the heating power does not raise the energy transfer to the bulk particles, i.e. the heating efficiency deteriorates. This power limit is serious for losses with strong energy dependence such as ripple diffusion. Small spatial loss can annihilate the increment of the fusion reaction by tail generation.

AB - The effect of spatial loss on ICRF (ion cyclotron range of frequency) wave heating is studied. A simple model for the energy-dependent loss term is adopted in the Fokker-Planck equation. The case of the minority ion heating by fundamental cyclotron resonance is analysed. It is found that the high energy particle loss imposes a limit on the heating power density, above which an increase in the heating power does not raise the energy transfer to the bulk particles, i.e. the heating efficiency deteriorates. This power limit is serious for losses with strong energy dependence such as ripple diffusion. Small spatial loss can annihilate the increment of the fusion reaction by tail generation.

UR - http://www.scopus.com/inward/record.url?scp=0024016343&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0024016343&partnerID=8YFLogxK

U2 - 10.1088/0029-5515/28/5/003

DO - 10.1088/0029-5515/28/5/003

M3 - Article

AN - SCOPUS:0024016343

VL - 28

SP - 779

EP - 787

JO - Nuclear Fusion

JF - Nuclear Fusion

SN - 0029-5515

IS - 5

ER -