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Measurement of molybdenum ion density for L-mode and H-mode plasma discharges in the EAST tokamak

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【作者】沈永才；张洪明；吕波；李颖颖；符佳；王福地；臧庆；万宝年；潘盼；叶民友； EAST team；

【Author】 Yongcai Shen;Hongming Zhang;Bo Lyu;Yingying Li;Jia Fu;Fudi Wang;Qing Zang;Baonian Wan;Pan Pan;Minyou Ye;EAST team;Institute of Plasma Physics,Chinese Academy of Sciences;School of Mathematics and Physics,Anqing Normal University;Department of Engineering and Applied Physics,University of Science and Technology of China;

【通讯作者】吕波;

【机构】 Institute of Plasma Physics,Chinese Academy of Sciences； School of Mathematics and Physics,Anqing Normal University； Department of Engineering and Applied Physics,University of Science and Technology of China；

【摘要】 We report the measurement of total molybdenum ion density for L-mode and H-mode plasmas on EAST using spectral lines observation and calculation based on an impurity transport code. A flat-filed extreme ultraviolet spectrometer with some spatial resolution is used to obtain the radial profiles of molybdenum spectral line emissions. The absolute calibration for the extreme ultraviolet spectrometer is finished by comparing the calculated bremsstrahlung intensity with the readings of CCD detector. Molybdenum ion transport study is performed using the radial ion density profiles and one-dimensional impurity transport code STRAHL. The total molybdenum density profiles are determined from the transport analysis. The molybdenum density during L-mode and H-mode phases are obtained, which are about 3 and 4 orders of magnitude smaller than the electron density, respectively. An inward pinch is found during the H-mode phase that leads to the peaked profile of molybdenum density.更多还原

【Abstract】 We report the measurement of total molybdenum ion density for L-mode and H-mode plasmas on EAST using spectral lines observation and calculation based on an impurity transport code. A flat-filed extreme ultraviolet spectrometer with some spatial resolution is used to obtain the radial profiles of molybdenum spectral line emissions. The absolute calibration for the extreme ultraviolet spectrometer is finished by comparing the calculated bremsstrahlung intensity with the readings of CCD detector. Molybdenum ion transport study is performed using the radial ion density profiles and one-dimensional impurity transport code STRAHL. The total molybdenum density profiles are determined from the transport analysis. The molybdenum density during L-mode and H-mode phases are obtained, which are about 3 and 4 orders of magnitude smaller than the electron density, respectively. An inward pinch is found during the H-mode phase that leads to the peaked profile of molybdenum density.更多还原

【关键词】 EAST； EUV spectroscopy； molybdenum density； L-mode and H-mode；
【Key words】 EAST； EUV spectroscopy； molybdenum density； L-mode and H-mode；

【基金】 Project supported by the National Key Research and Development Program of China (Grant No. 2017YFE031300);the Key Program of Research and Development of Hefei Science Center of China (Grant No. 2017HSC-KPRD002);the National Natural Science Foundation of China (Grant No. 11805231);the Natural Science Foundation of Anhui Province of China (Grant Nos. 1908085J01,1808085QA14,and 1908085QF274);the ASIPP Science and Research Fund of China (Grant No. DSJJ-17-03);Collaborative Innovation Program of Hefei Science Center,CAS (Grant No. 2019HSC-CIP005);Anqing Normal University Research Project,China (Grant Nos. 043-180079 and 044-140001000024)

【文献出处】 Chinese Physics B ,中国物理B , 编辑部邮箱 ,2020年06期

【分类号】TL631.24
【被引频次】2
【下载频次】17

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