Experimental evaluation of theoretically calculated ionization and recombination cross-sections of highly charged tungsten ions
Project/Area Number |
24760707
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Research Category |
Grant-in-Aid for Young Scientists (B)
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Allocation Type | Multi-year Fund |
Research Field |
Nuclear fusion studies
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Research Institution | Japan Atomic Energy Agency |
Principal Investigator |
NAKANO Tomohide 独立行政法人日本原子力研究開発機構, 核融合研究開発部門 那珂核融合研究所, 研究副主幹 (50354593)
|
Project Period (FY) |
2012-04-01 – 2015-03-31
|
Project Status |
Completed (Fiscal Year 2014)
|
Budget Amount *help |
¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2014: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2013: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2012: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
|
Keywords | 核融合 / プラズマ / 原子物理 / 原子データ / 分光 / トカマク / 不純物 / プラズマ・核融合 / タングステン / 電離断面積 / 再結合断面積 / タングステンイオン / 真空紫外分光 |
Outline of Final Research Achievements |
The purpose of this study is to calculate recombination and ionization cross-sections of W ions and to evaluate uncertainties of the cross-sections by means of experimental measurement. Although direct comparison of theoretical calculations to experimental measurements is difficult, we have developed a method which cancels out electron energy dependence of emission intensity and enables direct comparison of the experimentally measured intensity ratio of W44+ to W45+ emissions to the theoretically calculated ratio of W45+ recombination to W44+ ionization cross-section. The comparison shows that the calculation is in agreement with the measurement with a similar level of scatters to the experimental uncertainties. This indicates that the cross-sections with uncertainties, requested for tungsten density measurement in fusion plasmas for long, have been produced.
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Report
(4 results)
Research Products
(5 results)