We investigate the hindrance of the unfavored α -decay modes to the different daughter states, which have different spin than that of the parent nucleus but of the same parity. The duplicated daughter nucleus states of identical spin-parity ( J π ) are ascendingly ordered according to the sequence of their excitation energy. We found that the hindrance of the unfavored decay modes increases with increasing the difference in spin (Δ J ) between the parent and daughter states. This hindrance slightly increases when the daughter state has less spin than the parent. The preformation probability ( S α ) decreases with Δ J and the decay slows down. Furthermore, the increase of the order ( n ) of the state to which the decay takes place brings the decay intensity drop significantly and decrease. Consequently, the partial half-life strongly increases with n . The hindrance factor averagely drops from few tenth...

中文翻译：

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不利的α衰变跃迁到相同自旋和奇偶校验的重复子态的阻碍因素

我们研究了不利的α衰变模式对不同子状态的阻碍，这些子状态的旋转不同于父核的自旋，但具有相同的奇偶性。具有相同自旋奇偶性（Jπ）的重复子核状态根据其激发能的顺序升序排列。我们发现，不利的衰减模式的障碍随着父子状态之间的自旋（ΔJ）差异的增加而增加。当子状态的旋转比父状态少时，此障碍会稍微增加。预成型概率（Sα）随ΔJ减小，并且衰减变慢。此外，衰减发生的状态的阶数（n）的增加使衰减强度显着下降并减小。所以，部分半衰期随着n的增加而大大增加。阻碍因素平均从十分之几下降。