Model for improved divertor confinement

G. M. Staebler

doi:10.1088/0029-5515/30/11/007

Model for improved divertor confinement

G. M. Staebler

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Abstract

The improved divertor confinement (IDC) phenomenon, observed in the JT-60 tokamak, is explained using collisional transport theory. The model successfully describes the correlation between the increase in radiated power at the divertor and the increase in line averaged density of the plasma, which is characteristic of the IDC. Other prominent features of IDC, such as the grad-B drift dependence, divertor heat flux asymmetries and carbon-oxygen impurity exchange, are also explained. The model predicts that IDC could be obtained in deuterium plasmas. The reduction in heat load to the divertor caused by IDC would be an important benefit for a fusion reactor.

Original language	English
Pages (from-to)	2295-2303
Number of pages	9
Journal	Nuclear Fusion
Volume	30
Issue number	11
DOIs	https://doi.org/10.1088/0029-5515/30/11/007
State	Published - Nov 1990
Externally published	Yes

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title = "Model for improved divertor confinement",

abstract = "The improved divertor confinement (IDC) phenomenon, observed in the JT-60 tokamak, is explained using collisional transport theory. The model successfully describes the correlation between the increase in radiated power at the divertor and the increase in line averaged density of the plasma, which is characteristic of the IDC. Other prominent features of IDC, such as the grad-B drift dependence, divertor heat flux asymmetries and carbon-oxygen impurity exchange, are also explained. The model predicts that IDC could be obtained in deuterium plasmas. The reduction in heat load to the divertor caused by IDC would be an important benefit for a fusion reactor.",

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AU - Staebler, G. M.

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N2 - The improved divertor confinement (IDC) phenomenon, observed in the JT-60 tokamak, is explained using collisional transport theory. The model successfully describes the correlation between the increase in radiated power at the divertor and the increase in line averaged density of the plasma, which is characteristic of the IDC. Other prominent features of IDC, such as the grad-B drift dependence, divertor heat flux asymmetries and carbon-oxygen impurity exchange, are also explained. The model predicts that IDC could be obtained in deuterium plasmas. The reduction in heat load to the divertor caused by IDC would be an important benefit for a fusion reactor.

AB - The improved divertor confinement (IDC) phenomenon, observed in the JT-60 tokamak, is explained using collisional transport theory. The model successfully describes the correlation between the increase in radiated power at the divertor and the increase in line averaged density of the plasma, which is characteristic of the IDC. Other prominent features of IDC, such as the grad-B drift dependence, divertor heat flux asymmetries and carbon-oxygen impurity exchange, are also explained. The model predicts that IDC could be obtained in deuterium plasmas. The reduction in heat load to the divertor caused by IDC would be an important benefit for a fusion reactor.

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DO - 10.1088/0029-5515/30/11/007

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VL - 30

SP - 2295

EP - 2303

JO - Nuclear Fusion

JF - Nuclear Fusion

IS - 11

ER -

Model for improved divertor confinement

Abstract

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