دورية أكاديمية
L to H mode transition: parametric dependencies of the temperature threshold
| العنوان: | L to H mode transition: parametric dependencies of the temperature threshold |
|---|---|
| المؤلفون: | Bourdelle, C., Chonê, L., Fedorczak, N., Garbet, X., Beyer, P., Jet Contributors, García Muñoz, Manuel |
| المساهمون: | Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear, Universidad de Sevilla. RNM138: Física Nuclear Aplicada |
| بيانات النشر: | IOP Publishing |
| سنة النشر: | 2020 |
| المجموعة: | idUS - Deposito de Investigación Universidad de Sevilla |
| مصطلحات موضوعية: | Plasma physics, L H transition, Tokamak |
| الوصف: | The L to H mode transition occurs at a critical power which depends on various parameters, such as the magnetic field, the density, etc. Experimental evidence on various tokamaks (JET, ASDEX-Upgrade, DIII-D, Alcator C-Mod) points towards the existence of a critical temperature characterizing the transition. This criterion for the L-H transition is local and is therefore easier to be compared to theoretical approaches. In order to shed light on the mechanisms of the transition, simple theoretical ideas are used to derive a temperature threshold (Tth). They are based on the stabilization of the underlying turbulence by a mean radial electric field shear. The nature of the turbulence varies as the collisionality decreases, from resistive ballooning modes to ion temperature gradient and trapped electron modes. The obtained parametric dependencies of the derived Tth are tested versus magnetic field, density, effective charge. Various robust experimental observations are reproduced, in particular Tth increases with magnetic field B and increases with density below the density roll-over observed on the power threshold. ; EURATOM 633053 |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| العلاقة: | Nuclear Fusion, 55 (7), 073015-.; 633053; http://dx.doi.org/10.1088/0029-5515/55/7/073015Test; https://idus.us.es/handle//11441/100538Test |
| الإتاحة: | https://doi.org/10.1088/0029-5515/55/7/073015Test https://idus.us.es/handle//11441/100538Test |
| حقوق: | Attribution-NonCommercial-NoDerivatives 4.0 Internacional ; http://creativecommons.org/licenses/by-nc-nd/4.0Test/ ; info:eu-repo/semantics/openAccess |
| رقم الانضمام: | edsbas.987EFC74 |
| قاعدة البيانات: | BASE |
| الوصف غير متاح. |