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TJ-II:Radiation asymmetries and potential variations: Difference between revisions
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TJ-II:Radiation asymmetries and potential variations (view source)
Revision as of 11:44, 7 March 2018
, 7 March 2018→Description of the activity, including motivation/objectives and experience of the proponent (typically one-two pages)
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with <math>\theta</math> and <math>\phi</math> the poloidal and toroidal angular coordinates. | with <math>\theta</math> and <math>\phi</math> the poloidal and toroidal angular coordinates. | ||
When this is taken into account the equilibrium density of the different species ''a'' present in the plasma | When this is taken into account the equilibrium density of the different species ''a'' present in the plasma | ||
varies | varies accordingly since <math>n_{a0}=n_a0(r)\exp\left(-Z_{a}e\Phi_1/T_{a}\right)</math>. | ||
This can introduce a strong density variation of impurities due to their high charge state. In TJ-II plasmas experiments and simulations | |||
<ref>M. A. Pedrosa ''et al.'', ''Electrostatic potential variations along flux surfaces in stellarators'' Nucl. Fusion '''55''' 052001 (2015) </ref> | <ref>M. A. Pedrosa ''et al.'', ''Electrostatic potential variations along flux surfaces in stellarators'' Nucl. Fusion '''55''' 052001 (2015) </ref> | ||
<ref>J. M. Garcı́a-Regaña ''et al.'' ''Electrostatic potential variation on the flux surface and its impact on impurity transport'' Nuclear Fusion '''57''' 056004 (2017)</ref> | <ref>J. M. Garcı́a-Regaña ''et al.'' ''Electrostatic potential variation on the flux surface and its impact on impurity transport'' Nuclear Fusion '''57''' 056004 (2017)</ref> | ||