Observation of fine structure inPb190α decay

Properties of Alpha Decay to Rotational Bands of Heavy Nuclei

“…(22) are the same as those in Eq. (20). We have investigated the α-decay half-lives of nuclei in the ground states and isomeric states very recently and the calculated results are in good agreement with the experimental data, which indicates that the improved Royer's formula is successful.…”

“…17 Theoretically, the hindered α transition is an effective tool to study the properties of α emitters because it is closely related to the internal structure of nuclei. [18][19][20][21][22][23][24][25][26][27][28][29][30][31][32] However, it is difficult to describe quantitatively the unfavored α transitions because of the influence of both the nonzero angular momenta and the excitations of nucleons. In our previous work, we calculated the branching ratios of α-decay to the members of the ground-state rotational bands and excited 0 + states of even-even nuclei with proton number Z < 100 in the framework of the GLDM by taking into account the angular momentum of the α particle and the excitation probability of the daughter nucleus.…”

Branching ratios ofαdecay to excited states of even-even nuclei

“…These α transitions belong to the unfavored cases, which are strongly hindered as compared with the ground state ones. Theoretically, the hindered α transition is an effective tool for the study of the properties of α emitters because it is closely related to the internal structure of nuclei [15][16][17][18][19][20][21][22][23][24][25][26][27]. However, it is difficult to describe quantitatively the unfavored α transitions because of the influence of both the nonzero angular momentum and the excitation of nucleons, especially for α emitters in the neighborhood of shell closures.…”

“…In addition to the favored α transitions, the ground state of the parent nucleus can also decay to the excited states of the daughter nucleus ( l = 0) [14]. Recently, there is increasing interest in two kinds of α transitions of even-even nuclei from both experimental and theoretical sides, i.e., the α-decay to excited 0 + states and to members of the ground state rotational band [15][16][17][18][19][20][21][22][23][24][25][26][27]. These α transitions belong to the unfavored cases, which are strongly hindered as compared with the ground state ones.…”

Confirmation of the new isotope Pb178

“…The experimental values of the Pb isotopes in both panels (a) and (b) are obtained from Refs. [5,[28][29][30][31][32][33][34], while the experimental values used in Hg and Pt reduced-width calculation were obtained from ENSDF [35].…”