Article
Physics, Multidisciplinary
M. Ismail, A. Y. Ellithi, A. Adel, M. A. Abbas
Summary: The study readjusted the empirical Royer formulas and examined the effects of various factors on the accuracy of the formulas using experimental data and alpha-decay half-lives. The modified formulas were tested and compared with experimental data and other theoretical calculations. The study also made predictions for the alpha-decay half-lives of superheavy nuclei isotopes and explored the stability of neutron numbers at certain values.
Article
Physics, Multidisciplinary
O. K. Azeez, W. A. Yahya, A. A. Saeed
Summary: The α-decay half-lives of superheavy nuclei were studied using a modified Gamow-like model and improved empirical formulas. New adjustable parameters and coefficients for the formulas were obtained, and calculations showed that the Royer, DK, and AKRE formulas performed the best. Theoretical predictions also suggested that N=184 could be a possible magic number.
Article
Physics, Nuclear
Song Luo, Lin-Jing Qi, Dong-Meng Zhang, Biao He, Peng-Cheng Chu, Xiao-Hua Li
Summary: Based on the Santhosh formula, an improved formula is proposed to evaluate a decay half-lives for superheavy nuclei, considering the blocking effect of unpaired nucleons and the orbital angular momentum taken away by the emitted a particle. The formula is used to systematically investigate the a decay half-lives of 141 nuclei ranging from Z = 96 to Z = 118. The results suggest that N = 184 may be the next possible neutron magic number.
EUROPEAN PHYSICAL JOURNAL A
(2023)
Article
Physics, Nuclear
W. A. Yahya, T. T. Ibrahim
Summary: The cluster decay half-lives of heavy nuclei were calculated using the preformed cluster model with microscopic double folding interaction. The performance of relativistic NN interactions (HS, NL2, and NL-SH) and empirical expressions for the cluster preformation factor was investigated, with NL2 and NL-SH interactions showing better predictive power than the HS interaction. Predictions using NL2 interaction with a proposed empirical expression for the preformation factor were found to compare favorably with existing theoretical predictions and experimental data.
EUROPEAN PHYSICAL JOURNAL A
(2022)
Article
Astronomy & Astrophysics
V. Yu. Denisov
Summary: This article discusses the model for the simultaneous emission of two alpha-particles from the opposite sides of the nucleus (double alpha-decay) in detail. The 32 smallest values of the half-lives of double alpha-decay for nuclei are calculated. It is shown that the half-lives of double alpha-decay are much shorter than the emission of 8Be cluster with sequential decay into two alpha-particles. The results suggest that measuring this decay is possible in accelerator experiments by forming proton-rich nuclei.
Article
Physics, Nuclear
Jun-Gang Deng, Hong-Fei Zhang
Summary: The Generalized Liquid Drop Model (GLDM) is favored for alpha decay predictions due to its introduction of the quasimolecular shape mechanism and proximity energy. By improving the proximity energy, the GLDM model shows significant enhancements in predicting the alpha decay half-lives of superheavy nuclei. Choosing a more suitable proximity energy leads to more accurate and consistent predictions of alpha decay half-lives, including the identification of the next potential double magic nucleus, (298)Fl, after Pb-208.
Article
Physics, Multidisciplinary
K. Prathapan, P. Deneshan, M. K. Preethi Rajan, R. K. Biju
Summary: Within the framework of the Coulomb and Proximity Potential Model, the alpha decay half-lives of superheavy nuclei with various neutron numbers are systematically investigated. The predictive power of the model is verified by comparing the calculated half-lives with experimental data. The study reveals the occurrence of neutron shell closure and potential neutron magic numbers in certain isotopes.
INDIAN JOURNAL OF PHYSICS
(2023)
Article
Astronomy & Astrophysics
A. Adel, T. Alharbi
Summary: Theoretical predictions of α-decay properties and decay modes of superheavy isotopes (318-327)126 are presented in this study. The α-daughter interaction potential is constructed using a realistic M3Y-Paris nucleon-nucleon interaction, and the α-decay half-lives are calculated for both spherical and deformed shapes of daughter nuclei using the density-dependent cluster model. The results indicate that deformation decreases the α-decay half-lives compared to spherical shapes, and the predicted half-lives are in good agreement with other theoretical methods. The dominant decay mode for the isotopes (318-327)126 is determined through the competition between α-decay and spontaneous fission, and it is found that these isotopes have relatively long half-lives ranging from 10-6 to 10-3. The correlation between the preformation probability and the fragmentation potential for even-even 304-338126 isotopes is also elucidated, showing a negative linear relation. The feasibility of cluster emission from the superheavy isotope (318)126 is investigated using different theoretical approaches. These predictions can provide valuable guidance for future experimental research.
MODERN PHYSICS LETTERS A
(2023)
Article
Physics, Multidisciplinary
A. Adel, A. R. Abdulghany
Summary: Proton radioactivity and alpha-decay half-lives of neutron-deficient nuclei have been systematically studied, with a focus on the proton-nucleus interaction potential and density distributions. The study has identified new parameters, successfully reproduced experimental data and verified the applicability of the universal decay law. Experimental confirmation of theoretical calculations indicates satisfactory agreement in the research.
Article
Physics, Multidisciplinary
N. Sowmya, H. C. Manjunatha, K. N. Sridhar, P. S. Damodara Gupta, Krishnakanth Erappa
Summary: The alpha decay half-lives of heavy and superheavy nuclei were studied using eight different nuclear potentials. The results showed that the Prox00 nuclear potential exhibited minimal deviations and outperformed seven other potential models in predicting experimental half-lives of heavy and superheavy nuclei.
INDIAN JOURNAL OF PHYSICS
(2023)
Article
Physics, Nuclear
Lin-Jing Qi, Dong-Meng Zhang, Song Luo, Biao He, Xi-Jun Wu, Xun Chen, Xiao-Hua Li
Summary: In this study, a new Geiger-Nuttall law is proposed to systematically evaluate the half-lives of cluster radioactivity for different nuclei. The calculated results show good agreement with experimental data and outperform other existing methods. The formula is also extended to predict the half-lives of cluster radioactivity for additional nuclei in NUBASE2020.
Article
Physics, Nuclear
C. Nithya, K. P. Santhosh
Summary: This paper investigates the competition between alpha-decay and spontaneous fission (SF) of Z = 120 isotopes with 283 <= A <= 350. The dominant decay mode is found to be alpha-decay, with smaller possibility of cluster radioactivity.
Article
Nuclear Science & Technology
Yang-Yang Xu, Xiao-Yuan Hu, De-Xing Zhu, Xi-Jun Wu, Peng-Cheng Chu, Xiao-Hua Li
Summary: In this study, an improved Gamow model is proposed based on the screened electrostatic effect of the Coulomb potential. The model includes two adjustable parameters that represent the combined effect of interaction potential and reduced mass on the proton radioactivity half-life. The proton radioactivity half-lives of spherical and deformed nuclei are systematically calculated using this model, with corresponding root-mean-square deviations obtained. The model is also used to predict the proton radioactivity half-lives of certain nuclei and compared with the universal decay law proposed by Qi et al.
NUCLEAR SCIENCE AND TECHNIQUES
(2023)
Article
Nuclear Science & Technology
H. C. Manjunatha, N. Sowmya, P. S. Damodara Gupta, K. N. Sridhar, A. M. Nagaraja, L. Seenappa, S. Alfred Cecil Raj
Summary: New decay modes were identified in superheavy nuclei, including heavy particle emission and beta-plus emitters. Observations of various decay modes, such as Kr-86 emitters and Mo-96 radioactivity, were reported in superheavy nuclei. The study serves as a reference for identifying possible decay modes in the superheavy region.
NUCLEAR SCIENCE AND TECHNIQUES
(2021)
Article
Physics, Nuclear
Marzieh Sajedi, Zohreh Kargar
Summary: This study calculates the alpha decay half-lives for even-even nuclei with Z=60-118, as well as the cluster radioactivities for even-even emitters with available experimental data and various cluster decays of even-even radium isotopes. The calculations are performed using the Wentzel-Kramers-Brillouin method within the framework of the Bohr-Sommerfeld quantization condition based on the shifted Deng-Fan potential. The results obtained are compared with different potentials and theoretical models, demonstrating good agreement with experimental data and confirming the suitability of the shifted Deng-Fan potential to describe alpha and cluster decays of radioactive nuclei. The study also highlights the significant role of neutron magicity in the half-lives of cluster decays of radium isotopes at N=126.
Article
Physics, Nuclear
Mira Varma, Oliver K. Baker
Summary: In this letter, the authors expand upon the previous work to demonstrate the entanglement observed in top quark interactions. They propose that the thermal component caused by proton collisions with top quarks emerges from entanglement within the proton wave function, and they use published results to show the expected behavior.
Article
Physics, Nuclear
E. Ya. Paryev
Summary: In this study, we investigate the near-threshold meson photoproduction from protons and nuclei and explore the possibility of observing non-strange hidden-bottom pentaquark states through differential observables. We calculate the excitation functions and energy/momentum distributions for different production processes and propose that future experiments at high-luminosity electron-ion colliders could provide evidence for the existence of these hidden-bottom pentaquark resonances.
Article
Physics, Nuclear
M. Shariq Asnain, Manoj Kumar Sharma, Mohd. Shuaib, Aquib Siddique, Ishfaq Majeed Bhat, B. P. Singh, R. Prasad
Summary: This study validates the compound nucleus theory using heavy ion beams and different targets. By analyzing cross section data and comparing reaction cross section data, the study confirms the validity of the theory, but also observes discrepancies at lower excitation energies.
Article
Physics, Nuclear
Y. G. Yao, X. Y. Wu, H. Mei
Summary: This study presents a microscopic investigation of the electromagnetic properties of the low-lying states of single-A hypernucleus 9ABe using the HyperGCM method based on covariant density functional theory. The results are compared to those of a particle-rotor model (PRM) and show close agreement. It is found that the electric quadrupole transition strengths are more sensitive to the coupling strengths of the AN interaction than the magnetic moments and M 1 transition strengths.