Investigation of nonlinear effects in Doppler reflectometry using full-wave synthetic diagnostics

作     者：O L KRUTKIN A B ALTUKHOV A D GURCHENKO E Z GUSAKOV S HEURAUX M A IRZAK L A ESIPOV T P KIVINIEMI C LECHTE S LEERINK P NISKALA G ZADVITSKIY O L KRUTKIN;A B ALTUKHOV;A D GURCHENKO;E Z GUSAKOV;S HEURAUX;M A IRZAK;L A ESIPOV;T P KIVINIEMI;C LECHTE;S LEERINK;P NISKALA;G ZADVITSKIY

作者机构：Ioffe InstituteSt PetersburgRussia Institut Jean Lamour UMR 7198 CNRSUniv.de LorraineBP 50840F-54011 NancyFrance Aalto UniversityFI-02150 EspooFinland Institute of Interfacial Process Eng.and Plasma TechnologyD-70569 StuttgartGermany 

出 版 物：《Plasma Science and Technology》 (等离子体科学和技术（英文版）)

年 卷 期：2020年第22卷第6期

页      面：1-7页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 082701[工学-核能科学与工程] 0827[工学-核科学与技术] 0702[理学-物理学] 

基　　金：Modeling of the O-mode DR signals was performed with the financial support of RFBR grant 18-32-00031 Modeling of the X-mode DR signals was performed with the financial support of the Russian Science Foundation grant 17-1201110 Measurements at the FT-2 tokamak were supported by the state contract of the Ioffe Institute the work are supported by grants 316088 and 318314 of the Academy of Finland partially carried out within the framework of the French Federation for Magnetic Fusion Studies(FR-FCM) the EUROfusion Consortium and has received funding from the Euratom research and training programme 2014-2018 and 2019-2020 under grant agreement No.633053 

主　　题：reflectometry numerical modeling full-wave modeling 

摘      要：In this work,Doppler reflectometry(DR)and radial correlation DR(RCDR)nonlinear scattering effects are studied using full-wave modeling with a set of representative FT-2 tokamak turbulence as *** of the RCDR correlation function and widening of the DR poloidal wavenumber spectrum are *** effect on the dependence of the DR signal frequency shift on the probing wavenumber is found,namely,this dependence‘linearizing’in the nonlinear scattering *** effects are shown to be weaker for O-mode probing than for X-mode probing,while a faster transition to nonlinear regime is demonstrated for RCDR compared to DR in both probing scenarios.