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ダイバータ領域に導入される不純物 ガス由来の放射性生成核種の特性評価
https://repo.qst.go.jp/records/56128
https://repo.qst.go.jp/records/561287ec3254b-1755-4d44-84f4-32acb4d1b4ab
| Item type | 一般雑誌記事 / Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2019-02-01 | |||||
| タイトル | ||||||
| タイトル | ダイバータ領域に導入される不純物 ガス由来の放射性生成核種の特性評価 | |||||
| 言語 | ||||||
| 言語 | jpn | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | article | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
染谷, 洋二
× 染谷, 洋二× 丹治, 和拓× 染谷 洋二× 丹治 和拓 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Impurity gases such as Ne, Ar, Kr or Xe are injected to the main chamber of a fusion reactor to reduce the heat load to the divertor plate. Part of these noble gases are activated in the divertor area and can potentially be a risk of mobilization and release to the environment in case of an accident. This paper describes the assessment of the radioactive nuclides generated from the impurity gases. In the assessment, the neutron energy spectrum calculated from a three-dimensional MCNP-5 model is used to determine the induced radioactivity of the gases using a DCHAIN-SP code with the nuclear library FENDL/A-2. It is found that under practical irradiation condition, Ne and Ar can be used as impurity gases without a safety constraint. When using Kr, it is necessary to limit the irradiation time in the vacuum vessel, and/or take measures for radioactive decay by the recovery and storage of used activated gases. Xe is not recommended to use as an impurity gas for divertor radiative cooling because of toxic nuclides production. | |||||
| 書誌情報 |
ダイバータ領域に導入される不純物 ガス由来の放射性生成核種の特性評価 発行日 2018-10 |
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