Publication:
The role of plasma-molecule interactions on power and particle balance during detachment on the TCV tokamak

Дата
2021
Авторы
Verhaegh, K.
Lipschultz, B.
Harrison, J. R.
Duval, B. P.
Kukushkin, A.
Pshenov, A.
Journal Title
Journal ISSN
Volume Title
Издатель
Научные группы
Логотип проекта
Научная группа
TCV Team
Организационные подразделения
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Организационная единица
Институт лазерных и плазменных технологий
Стратегическая цель Института ЛаПлаз – стать ведущей научной школой и ядром развития инноваций по лазерным, плазменным, радиационным и ускорительным технологиям, с уникальными образовательными программами, востребованными на российском и мировом рынке образовательных услуг.
Выпуск журнала
Аннотация
This paper shows experimental results from the TCV tokamak that indicate plasma-molecule interactions involving D2+ <i and possibly D- play an important role as sinks of energy (through hydrogenic radiation as well as dissociation) and particles (ions) during divertor detachment if low target temperatures (<3 eV) are achieved. Both molecular activated recombination (MAR) and ion source reduction due to a power limitation effect are shown to be important in reducing the ion target flux during a density ramp. In contrast, the electron-ion recombination (EIR) ion sink is too small to play an important role in reducing the ion target flux. MAR or EIR do not occur during N-2 seeding induced detachment as the target temperatures are not sufficiently low. The impact of D-2(+) <i is shown to be underestimated in present (vibrationally unresolved) SOLPS-ITER simulations, which could result from an underestimated D-2 + D+-> D-2(+) + D rate. The converged SOLPS-ITER simulations are post-processed with alternative reaction rates, resulting in considerable contributions of D-2(+) to particle and power losses as well as dissociation below the D-2 dissociation area. Those findings are in quantitative agreement with the experimental results.
Описание
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Цитирование
The role of plasma-molecule interactions on power and particle balance during detachment on the TCV tokamak / Verhaegh, K [et al.] // Nuclear Fusion. - 2021. - 61. - № 10. - 10.1088/1741-4326/ac1dc5
URI
https://www.doi.org/10.1088/1741-4326/ac1dc5
 https://www.scopus.com/record/display.uri?eid=2-s2.0-85115215234&origin=resultslist
 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000694700700001
 https://openrepository.mephi.ru/handle/123456789/24699
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