<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>α</mml:mi></mml:math>-decay half-lives of superheavy nuclei with <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>Z</mml:mi><mml:mo>=</mml:mo><mml:mn>122</mml:mn><mml:mo>–</mml:mo><mml:mn>125</mml:mn></mml:mrow></mml:math>
Omar Nagib
Abstract
For $\ensuremath{\alpha}$-decay half-life calculations in this work, the Coulomb and proximity potential model with a new semiempirical formula for diffuseness parameter developed in previous work [Phys. Rev. C 100, 024601 (2019)] is used. The present model in this work is compared with the generalized liquid-drop model (GLDM), universal decay law (UDL), and experimental half-lives in the region $Z=104--118$. Next, the predicted half-lives of 51 superheavy nuclei (SHN) with $Z=122--125$ by the present model are compared with those of GLDM and UDL. The present model is revealed to be more accurate in reproducing experimental half-lives compared to GLDM and UDL. Moreover, it is found that the predictions of the present model and UDL are highly consistent while GLDM largely deviates from the other two. A study of the competition between $\ensuremath{\alpha}$-decay and spontaneous fission (SF) shows that $\ensuremath{\alpha}$ decay is the dominant mode. Among the studied SHN with $Z=122--125$, $^{295--307}122$ and $^{314--320}125$ are identified as potential candidates whose half-lives are relatively long enough to be experimentally detected in the future through their $\ensuremath{\alpha}$-decay chains. The identified candidates are in good agreement with other recent work.