Abstract
Transient transport experiments are performed in plasmas with and without internal transport barriers (ITB) on LHD and JT-60U. The dependence of χe on the electron temperature, Te, and on the electron temperature gradient, ∇Te, is analysed with an empirical non-linear heat transport model. In plasmas without an ITB, two different types of non-linearity of the electron heat transport are observed from cold/heat pulse propagation: the χe depends on Te and ∇Te in JT-60U, while the ∇Te dependence is weak in LHD. Inside the ITB region, there is none or weak ∇T e dependence both in LHD and JT-60U. Growth of the cold pulse driven by the negative Te dependence of χe is observed inside the ITB region (LHD) and near the boundary of the ITB region (JT-60U).
| Original language | English |
|---|---|
| Pages (from-to) | 133-141 |
| Number of pages | 9 |
| Journal | Nuclear Fusion |
| Volume | 46 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - Jan 1 2006 |
| Externally published | Yes |
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All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics
- Condensed Matter Physics
Cite this
Comparison of transient electron heat transport in LHD helical and JT-60U tokamak plasmas. / Shigeru, Inagaki; Takenaga, H.; Ida, K.; Isayama, A.; Tamura, N.; Takizuka, T.; Shimozuma, T.; Kamada, Y.; Kubo, S.; Miura, Y.; Nagayama, Y.; Kawahata, K.; Sudo, S.; Ohkubo, K.
In: Nuclear Fusion, Vol. 46, No. 1, 01.01.2006, p. 133-141.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Comparison of transient electron heat transport in LHD helical and JT-60U tokamak plasmas
AU - Shigeru, Inagaki
AU - Takenaga, H.
AU - Ida, K.
AU - Isayama, A.
AU - Tamura, N.
AU - Takizuka, T.
AU - Shimozuma, T.
AU - Kamada, Y.
AU - Kubo, S.
AU - Miura, Y.
AU - Nagayama, Y.
AU - Kawahata, K.
AU - Sudo, S.
AU - Ohkubo, K.
PY - 2006/1/1
Y1 - 2006/1/1
N2 - Transient transport experiments are performed in plasmas with and without internal transport barriers (ITB) on LHD and JT-60U. The dependence of χe on the electron temperature, Te, and on the electron temperature gradient, ∇Te, is analysed with an empirical non-linear heat transport model. In plasmas without an ITB, two different types of non-linearity of the electron heat transport are observed from cold/heat pulse propagation: the χe depends on Te and ∇Te in JT-60U, while the ∇Te dependence is weak in LHD. Inside the ITB region, there is none or weak ∇T e dependence both in LHD and JT-60U. Growth of the cold pulse driven by the negative Te dependence of χe is observed inside the ITB region (LHD) and near the boundary of the ITB region (JT-60U).
AB - Transient transport experiments are performed in plasmas with and without internal transport barriers (ITB) on LHD and JT-60U. The dependence of χe on the electron temperature, Te, and on the electron temperature gradient, ∇Te, is analysed with an empirical non-linear heat transport model. In plasmas without an ITB, two different types of non-linearity of the electron heat transport are observed from cold/heat pulse propagation: the χe depends on Te and ∇Te in JT-60U, while the ∇Te dependence is weak in LHD. Inside the ITB region, there is none or weak ∇T e dependence both in LHD and JT-60U. Growth of the cold pulse driven by the negative Te dependence of χe is observed inside the ITB region (LHD) and near the boundary of the ITB region (JT-60U).
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U2 - 10.1088/0029-5515/46/1/015
DO - 10.1088/0029-5515/46/1/015
M3 - Article
AN - SCOPUS:29244447712
VL - 46
SP - 133
EP - 141
JO - Nuclear Fusion
JF - Nuclear Fusion
SN - 0029-5515
IS - 1
ER -