Investigation of Ion Temperature Characteristics in the HT-7 Tokamak

Characteristics of ion temperature measured with charge-exchange recombination spectroscopy （CXRS） were studied in Ohmic, lower-hybrid-wave （LHW） driven and ion-cyclotron- resonance-frequency （ICRF） heated plasmas in HT-7. The results indicate that the central ion temperature T10 follows the one-thi...

Full description

Saved in:
Bibliographic Details
Published inPlasma science & technology Vol. 13; no. 5; pp. 535 - 540
Main Author 李颖颖 符佳 石跃江 王福地 张伟 提昂 许平 黄懿赟 胡纯栋 DNB team
Format Journal Article
LanguageEnglish
Published IOP Publishing 01.10.2011
Subjects
ICRF
回旋共振频率
托卡马克
温度特性
热等离子体
碰撞能量转移
离子温度
等离子体电流
Online AccessGet full text

Cover

More Information
Summary:Characteristics of ion temperature measured with charge-exchange recombination spectroscopy （CXRS） were studied in Ohmic, lower-hybrid-wave （LHW） driven and ion-cyclotron- resonance-frequency （ICRF） heated plasmas in HT-7. The results indicate that the central ion temperature T10 follows the one-third power law in the product of central line-averaged density Ne and plasma current Ip in Ohmic discharges and is therefore consistent with the Artsimovich scaling law T10 = K （Ip Bt ne R2）1/3. It is shown that there is an appreciable increase of ion temperature during the operation with both LHW and ICRF and that the increment of ion temperature in those shots is mainly due to the energy transfer via collisions between ions and electrons rather that by direct heating of the ions.
Bibliography:charge exchange recombination spectroscopy, ion temperature, tokamak
Characteristics of ion temperature measured with charge-exchange recombination spectroscopy （CXRS） were studied in Ohmic, lower-hybrid-wave （LHW） driven and ion-cyclotron- resonance-frequency （ICRF） heated plasmas in HT-7. The results indicate that the central ion temperature T10 follows the one-third power law in the product of central line-averaged density Ne and plasma current Ip in Ohmic discharges and is therefore consistent with the Artsimovich scaling law T10 = K （Ip Bt ne R2）1/3. It is shown that there is an appreciable increase of ion temperature during the operation with both LHW and ICRF and that the increment of ion temperature in those shots is mainly due to the energy transfer via collisions between ions and electrons rather that by direct heating of the ions.
34-1187/TL
ISSN:1009-0630
DOI:10.1088/1009-0630/13/5/05