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Radiation loss in a compound plasma system with high and low temperature regions

高温領域と低温領域をもつ複合系プラズマにおける放射損失

Cheng, F.-Y.*; 滝塚 知典; 林 伸彦; Shi, B.-R.*

Cheng, F.-Y.*; Takizuka, Tomonori; Hayashi, Nobuhiko; Shi, B.-R.*

複合系プラズマにおける不純物の非平衡放射損失計算コードを開発した。複合系プラズマは、高温プラズマ領域と低温プラズマ領域で構成される。不純物種として炭素を考えた場合の放射損失量を計算し評価した。2つの領域間の粒子交換によって、複合系における放射損失率は単一系の放射損失率よりも低くなる。放射損失量は、低温領域の方が高温領域よりもはるかに大きくなる。これは、低温領域が体積としては小さいが、比較的低温で高密度であるためである。

A code has been developed for calculating the non-coronal radiation of impurity in a compound plasma system which consists of high and low temperature regions. The radiation loss of impurity carbon in this system is calculated and analyzed. The cooling rate in this system is smaller than that in a homogeneous plasma system due to the particle exchange between the two regions of the system. The volumetric radiation is much bigger in the low temperature region than in the high temperature region because of the relatively low temperature and high electron density, despite the much smaller volume.

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