Studies of the transport properties of tokamak plasmas using perturbation analysis are discussed. The focus is on experiments with not too large perturbations, such as sawtooth induced heat and density pulse propagation, power modulation and oscillatory gas-puff experiments. The approximations made in the standard analysis of such experiments are made explicit and are discussed. References are given to papers that deal with specific aspects of the theory. Points of agreement as well as discrepancies between different experiments and gaps in the experimental data base are highlighted. The analysis of cross-coupling between electron thermal and particle transport using simultaneous measurements of heat and density pulses in JET is discussed, as an illustration of the potentiality to measure off-diagonal elements of the transport matrix in perturbative experiments.
摂動解析を用いたトカマクプラズマの輸送特性の研究について論じる。焦点は、鋸歯状振動による熱・密度パルス伝播、パワー変調、振動ガスパフ実験など、過度に大きな摂動を伴わない実験に置かれる。これらの実験の標準的な解析において用いられる近似を明確にし、考察する。理論の特定の側面を扱った論文への参考文献を示す。異なる実験間での一致点と相違点、および実験データの欠落箇所を強調する。JETにおける熱・密度パルスの同時測定を用いた電子熱輸送と粒子輸送の間の交叉結合の解析は、摂動実験における輸送行列の非対角要素を測定する可能性を示す例として論じられる。