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Calculational models for the treatment of pulsed/intermittent activation within fusion energy devices

S.E. Spangler, J.E. Sisolak, D.L. Henderson1993年Fusion Engineering and DesignIF 1.7出版社

AbstractTwo calculationally efficient methods have been developed to compute the induced radioactivity due to pulsed/intermittent irradiation histories as encountered in both magnetic and inertial fusion energy devices. The numerical algorithms are based on the linear chain method (Bateman Equations) and employ series reduction and matrix algebra. The first method models the case in which the irradiated materials are present throughout a series of irradiation pulses. The second method treats the case where a fixed amount of radioactive and transmuted material is created during each pulse. Analytical solutions are given for each method for a three nuclide linear chain. Numerical results and comparisons are presented for a select number of linear chains.

日本語訳

パルス状/間欠照射による誘導放射能を計算するための、計算効率の高い2つの方法が開発された。これらの方法は、磁気核融合装置と慣性核融合装置の両方で遭遇するものである。数値アルゴリズムは線形連鎖法(ベイトマン方程式)に基づいており、級数簡約法と行列法を採用している。第1の方法は、照射パルスの系列全体を通じて照射材料が存在する場合をモデル化する。第2の方法は、各パルス中に生成される放射性物質および変成物質の量が固定されている場合を扱う。各方法について、3核種線形連鎖に対する解析解が与えられている。選択された数の線形連鎖について数値結果と比較が提示されている。

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