アクチニドリサイクルに関わる基礎データ集 -核データ関連-

The fundamental data book for the actinide recycle system; Nuclear data

日向野 直美; 若林 利男

not registered; not registered

マイナアクチニドの消滅処理に関する研究が,原子炉,核燃料再処理,燃料製造の各分野で検討されている。しかし,この検討に不可欠な核データは不足している。そこで,以下の重要な13項目の核データを収集した。(データ:核反応断面積,断面積の形状,生成・崩壊連鎖,崩壊定数,核分裂収率,崩壊熱,レベルスキーム,毒性,中性子発生量,発熱量,群定数)。

Studies on actinide (Pu, Np, Am, Cm) transmutation and on making extra gains from the actinides have been enhanced recently. The fundamental data of these nuclides are very important in the studies. However, they are not sufficient and have larger uncertainty comparing to uranium and major isotopes of Pu, since the actinides were considered to play minor roles in fuel cycle. Both difficulties in handling and higher cost make it troublesome to improve nuclear data of the actinides. To facilitate the related studies on actinides, nuclear data of actinides, which are usable, are described in this report. Data items and nuclides are selected from the view point of thier importance in researching Actinide Recycle System. Thirteen items shown below are selected, (1)Cross Section (2)Uncertainty of Cross Section data (3)Chain (4)Decay Constant (5)Fission Yield (6)Mass Yield (7)Decay Heat (8)Energy Lever Schema of Gamma Ray (9)Specific Activity (10)Toxicity (11)Neutron Yields (12)Calorific Value (13)Group Constant