Electron Gyro-scale Fluctuation Measurements in National Spherical Torus Experiment H-mode Plasmas

Smith, D R ; Lee, W ; Mazzucato, E ; Park, H K ; Bell, R E ; Domier, C W ; LeBlanc, B P ; Levinton, F M ; Luhmann, N C ; Menard, J E

关键词: AMPLITUDES;    ELECTRON TEMPERATURE;    ELECTRONS;    FLUCTUATIONS;    SCATTERING;    TRANSPORT;    TURBULENCE NSTX;    ETG turbulence;    collective scattering;   

DOI  :  10.2172/962142
RP-ID  :  PPPL-4430
PID  :  OSTI ID: 962142
Others  :  TRN: US0903315

学科分类：原子、分子光学和等离子物理

美国|英语

来源: SciTech Connect

【 摘 要 】

A collective scattering system has measured electron gyro-scale fluctuations in National Spherical Torus Experiment (NSTX) H-mode plasmas to investigate electron temperature gradient (ETG) turbulence. Observations and results pertaining to fluctuation measurements in ETGstable regimes, the toroidal field scaling of fluctuation amplitudes, the relation between between fluctuation amplitudes and transport quantities, and fluctuation magnitudes and k-spectra are presented. Collectively, the measurements provide insight and guidance for understanding ETG turbulence and anomalous electron thermal transport.