ノベリウムの原子間レーザー共振離子スペクトロスコーピー
Mustapha Laatiaoui1,2, Werner Lauth3, Hartmut Backe3
1Helmholtz-Institut Mainz, Staudingerweg 18, D-55128 Mainz, Germany.
Nature
|September 30, 2016
まとめ
100より重い元素であるノベリウム (No) の光学スペクトロスコーピーを達成した. 超重元素の原子構造の決定におけるこの突破は 将来の研究への道を開きます
科学分野:
- 原子物理学
- 核化学
- スペクトロスコーピー
背景:
- 伝統的に光学スペクトロスコピーは 原始的同位体の原子構造を明らかにします
- 相対論的効果は原子構造の計算に不可欠であり,原子番号でスケーリングされます.
- トランスフェルミウム元素の原子構造 (原子番号 > 100) は,生産上の課題のため,実験的に不明のままである.
研究 の 目的:
- ノベリウム (原子番号102) の原子構造を実験的に決定する.
- 超重元素の原子と核の特性を高精度で測定する.
- 複雑で重い元素の現在の理論モデルの限界を克服する.
主な方法:
- レーザー共振イオン化スペクトロスコピーは,一度に1つの原子の研究に使用されました.
- ノベリウムにおける基底状態移行1S01P1の識別.
- ライドバーグ数列を観察して,イオン化電位を決定する.
主要な成果:
- ノベリウムの基底状態移行1S01P1が特定された.
- ノベリウムのイオン化ポテンシャルの上限が確立された.
- レーザーの直接刺激により,現在の理論的な計算よりも正確な結果が得られました.
結論:
- この研究では,超重元素であるノベリウムに 光学スペクトロスコピーを成功裏に実施しました
- この発見により,ノベリウム以外の元素の原子と核の特性を高精度で測定することができる.
- この研究は,重元素の研究のための高度な理論モデルの必要性を強調しています.
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