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ファイル | 記述 | サイズ | フォーマット | |
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PhysRevC.103.024318.pdf | 592.03 kB | Adobe PDF | 見る/開く |
タイトル: | Effective interactions between nuclear clusters |
著者: | Kanada-En'yo, Yoshiko Lee, Dean |
著者名の別形: | 金田, 佳子 |
キーワード: | Cluster models Nuclear binding Nuclear forces Nuclear Physics |
発行日: | Feb-2021 |
出版者: | American Physical Society (APS) |
誌名: | Physical Review C |
巻: | 103 |
号: | 2 |
論文番号: | 024318 |
抄録: | The effective interactions between two nuclear clusters, d+d, t+t, and α+α, are investigated within a cluster model using local nucleon-nucleon (NN) forces. It is shown that the interaction in the spin-aligned d+d system is repulsive for all intercluster distances, whereas the α+α and spin-aligned t+t systems are attractive at intermediate distances. The Pauli blocking between identical-nucleon pairs is responsible for the cluster-cluster repulsion and becomes dominant in the shallow binding limit. We demonstrate that two d clusters could be bound if the NN force has nonzero range and is strong enough to form a deeply bound d cluster, or if the NN force has both even-parity and odd-parity attraction. Effective dimer-dimer interactions for general quantum systems of two-component fermions are also discussed in heavy-light mass limit, where one component is much heavier than the other, and their relation to intercluster interactions in nuclear systems are discussed. Our findings provide a conceptual foundation for conclusions obtained numerically in the literature, that increasing the range or strength of the local part of the attractive nucleon-nucleon interaction results in a more attractive cluster-cluster interaction. |
著作権等: | © 2021 American Physical Society |
URI: | http://hdl.handle.net/2433/268171 |
DOI(出版社版): | 10.1103/PhysRevC.103.024318 |
出現コレクション: | 学術雑誌掲載論文等 |
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