2022
DOI: 10.1088/2058-6272/ac85a3
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Quasi-coherent mode in core plasma of SUNIST spherical tokamak

Abstract: A quasi-coherent (QC) mode was observed in the core region of low-density ohmic plasmas in Sino-UNIted Spherical Tokamak (SUNIST). In experiments on the QC mode, two sets of moveable Langmuir probes (LPs) were used to measure the local parameters including floating potential, electron temperature, electron density, and so on, as well as their profiles. To monitor the magnetohydrodynamic (MHD) activities, a Mirnov probe (MP) was used to measure the poloidal magnetic fluctuation. The QC mode can be seen in the s… Show more

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Cited by 2 publications
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“…In the past several decades, the CM/QCM was studied in many tokamaks. A kind of quasi coherent mode (QCM) is usually observed in the core region of low-density plasmas and disappears as the density or collision rate exceeds a certain threshold [24][25][26][27][28][29][30][31][32]. It is usually believed that the QCM corresponds to the turbulence driven by trapped electron mode (TEM) [27][28][29][30][32][33][34].…”
Section: Introductionmentioning
confidence: 99%
See 1 more Smart Citation
“…In the past several decades, the CM/QCM was studied in many tokamaks. A kind of quasi coherent mode (QCM) is usually observed in the core region of low-density plasmas and disappears as the density or collision rate exceeds a certain threshold [24][25][26][27][28][29][30][31][32]. It is usually believed that the QCM corresponds to the turbulence driven by trapped electron mode (TEM) [27][28][29][30][32][33][34].…”
Section: Introductionmentioning
confidence: 99%
“…A kind of quasi coherent mode (QCM) is usually observed in the core region of low-density plasmas and disappears as the density or collision rate exceeds a certain threshold [24][25][26][27][28][29][30][31][32]. It is usually believed that the QCM corresponds to the turbulence driven by trapped electron mode (TEM) [27][28][29][30][32][33][34]. Another kind of CM/QCM is usually manifested by density fluctuation in the edge region of Hmode plasma [35][36][37][38][39], which is probably a form of ballooning mode [35,38].…”
Section: Introductionmentioning
confidence: 99%