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$$alpha$$-nucleus potential for $$alpha$$-decay and sub-barrier fusion

$$alpha$$崩壊とサブバリアー融合反応を決める$$alpha$$粒子-原子核間ポテンシャル

Denisov, V. Yu.*; 池添 博

Denisov, V. Yu.*; Ikezoe, Hiroshi

$$alpha$$粒子と原子核間のポテンシャルをアルファ崩壊の半減期データと$$alpha$$+$$^{40}$$Ca系、$$alpha$$+$$^{59}$$Co系、$$alpha$$+$$^{208}$$Pb系の融合反応断面積データから決めた。$$alpha$$崩壊の半減期はWKB法を使いクラスターモデルを仮定して計算した。得られた$$alpha$$崩壊の半減期と融合断面積は実験データとよく一致した。超重元素を作るときや重い元素の構造研究に$$alpha$$粒子と重い原子核の融合反応が使えることを示した。

The set of parameters for alpha-nucleus potential is derived by using the data for both the alpha-decay half-lives and the fusion cross-sections around barrier for reactions alpha+$$^{40}$$Ca, alpha+$$^{59}$$Co, alpha+$$^{208}$$Pb. The alpha-decay half-lives are obtained in the framework of cluster model by using the WKB approximation. The evaluated alpha-decay half-lives and the fusion cross-sections are well agreed with the data. Fusion reactions between alpha-particle and heavy nuclei can be used for both the formation of very heavy nuclei and the spectroscopic studies of the formed compound nuclei.

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パーセンタイル:99.42

分野:Physics, Nuclear

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