On the Density Limit of Tokamaks

On the Density Limit of Tokamaks PDF Author: Bo Lehnert
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ISBN:
Category :
Languages : en
Pages : 56

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The Evaluation of the Density Limits in Tokamaks

The Evaluation of the Density Limits in Tokamaks PDF Author: Michael Tendler
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ISBN:
Category :
Languages : en
Pages : 30

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A Numerical Study of Density Limit Mechanisms in Tokamaks

A Numerical Study of Density Limit Mechanisms in Tokamaks PDF Author: Weston Monroe Stacey
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ISBN:
Category : Controlled fusion
Languages : en
Pages : 33

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Density Limits in Tokamaks

Density Limits in Tokamaks PDF Author: Michael Tendler
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ISBN:
Category :
Languages : en
Pages : 26

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A New Look at Density Limits in Tokamaks

A New Look at Density Limits in Tokamaks PDF Author: Martin Greenwald
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ISBN:
Category :
Languages : en
Pages : 16

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Density Limits in Tokamaks

Density Limits in Tokamaks PDF Author: Weston Monroe Stacey
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ISBN:
Category : Plasma injection
Languages : en
Pages : 43

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Comment on the Tokamak Density Limit, June, 1980

Comment on the Tokamak Density Limit, June, 1980 PDF Author: J.A. Reynolds
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ISBN: 9780853110903
Category :
Languages : en
Pages : 10

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Investigations of the Influence of Thermal Instabilities Onthe Density Limit in Tokamaks

Investigations of the Influence of Thermal Instabilities Onthe Density Limit in Tokamaks PDF Author: W. Junker
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ISBN:
Category :
Languages : en
Pages : 82

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Tokamak Density Limits

Tokamak Density Limits PDF Author: Frederick Alan Kelly
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ISBN:
Category : Tokamaks
Languages : en
Pages : 274

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Murakami Density Limit in Tokamaks and Reversed-field Pinches

Murakami Density Limit in Tokamaks and Reversed-field Pinches PDF Author:
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Category :
Languages : en
Pages :

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A theoretical upper limit for the density in an ohmically heated tokamak discharge follows from the requirement that the ohmic heating power deposited in the central current-carrying channel exceed the impurity radiative cooling in this critical region. A compact summary of our results gives this limit n/sub M/ for the central density as n/sub M/ = (Z/sub e//(Z/sub e/-1)12n/sub eo/ (B/sub T//1T)(1m/R) where n/sub eo/ depends strongly on the impurity species and is remarkably independent of the central electron temperature T/sub e/(0). For T/sub e/(0) approx. 1 keV, we have n/sub eo/ = 1.5 x 1014 cm−3 for beryllium, n/sub eo/ = 5 x 1013 cm−3 for oxygen, n/sub eo/ = 1.0 x 1013 cm−3 for iron, and n/sub eo/ = 0.5 x 1013 cm−3 for tungsten. The results agree quantitatively with Murakami's original observations. A similar density limit, known as the I/N limit, exists for reversed-field pinch devices and this limit has also been evaluated for a variety of impurity species.