The latest experimental data ofα-decay half-lives for 573 nuclei within the range of 52≤Z≤118 are utilized to enhance empirical formulas with updated coefficients.These formulas are enhanced by analyzing the contri...The latest experimental data ofα-decay half-lives for 573 nuclei within the range of 52≤Z≤118 are utilized to enhance empirical formulas with updated coefficients.These formulas are enhanced by analyzing the contributions of orbital angular momentum and isospin asymmetry.The effect of deformation of daughter nuclei on theα-decay half-life is modeled by incorporating two additional terms,dependent on the quadrupole and hexadecapole deformation parameters,into the empirical formulas for a-decay half-lives.Incorporating these deformation-dependent terms,along with angular momentum and isospin asymmetry,we improve the standard deviation by approximately 17%.The revised empirical formulas for aα-decay half-lives demonstrate better agreement with experimental data when deformation factors are included.The modified formulas are validated through comparisons with recent experimental results and further theoretical predictions.This paper presents and compares a-decay half-life predictions for several isotopes of superheavy nuclei with Z=120-126,which are yet to be experimentally synthesized.For various isotopes of each element,the variation in logio T with changes in the neutron number is also explored.展开更多
In the framework of Strutinsky＇s approach, we calculated the shell and the residual pairing correction energies for 5569 even-even nuclei in the range 72 ≤ Z ≤ 282 and 96≤N ≤ 540. Quasi-magic numbers and deformed...In the framework of Strutinsky＇s approach, we calculated the shell and the residual pairing correction energies for 5569 even-even nuclei in the range 72 ≤ Z ≤ 282 and 96≤N ≤ 540. Quasi-magic numbers and deformed islands of stability that reside in a range defined by Green＇s formula and the two-neutrons drip line are introduced. We present 36 quasi-magic proton and 53 quasi-magic neutron magic numbers that contribute to the formation of 133 deformed islands of stability along the N-Z space. The quasi-magic proton and neutron magic numbers volatile as the mass number increases and other magic numbers take over. Consequently, the deformed islands of stability fail to exhibit a pattern along the search space covered.展开更多
文摘The latest experimental data ofα-decay half-lives for 573 nuclei within the range of 52≤Z≤118 are utilized to enhance empirical formulas with updated coefficients.These formulas are enhanced by analyzing the contributions of orbital angular momentum and isospin asymmetry.The effect of deformation of daughter nuclei on theα-decay half-life is modeled by incorporating two additional terms,dependent on the quadrupole and hexadecapole deformation parameters,into the empirical formulas for a-decay half-lives.Incorporating these deformation-dependent terms,along with angular momentum and isospin asymmetry,we improve the standard deviation by approximately 17%.The revised empirical formulas for aα-decay half-lives demonstrate better agreement with experimental data when deformation factors are included.The modified formulas are validated through comparisons with recent experimental results and further theoretical predictions.This paper presents and compares a-decay half-life predictions for several isotopes of superheavy nuclei with Z=120-126,which are yet to be experimentally synthesized.For various isotopes of each element,the variation in logio T with changes in the neutron number is also explored.
文摘In the framework of Strutinsky＇s approach, we calculated the shell and the residual pairing correction energies for 5569 even-even nuclei in the range 72 ≤ Z ≤ 282 and 96≤N ≤ 540. Quasi-magic numbers and deformed islands of stability that reside in a range defined by Green＇s formula and the two-neutrons drip line are introduced. We present 36 quasi-magic proton and 53 quasi-magic neutron magic numbers that contribute to the formation of 133 deformed islands of stability along the N-Z space. The quasi-magic proton and neutron magic numbers volatile as the mass number increases and other magic numbers take over. Consequently, the deformed islands of stability fail to exhibit a pattern along the search space covered.
