β decay half-lives and rates
Oxbash code
132Sn region

How to Cite

KHITER , M., & BENRACHI, F. (2021). BETA DECAY HALF-LIVES AND RATES OF 134-136SN NUCLEI. Journal of Sciences & Technology , 6(2), 15–19. Retrieved from


In astrophysical environment, allowed Gamow-Teller (GT) transitions and space phase factors play an important role in determination of transition rates and half-lives, particularly for β-decay in presupernova evolution of massive stars. The estimation of these half-lives in neutron rich nuclei is needed in astrophysics for the understanding of supernovae explosions and the processes of nucleosynthesis, principally the r-process, and in the experimental exploration of the nuclear landscape. Their determination in agreement with experimental results is a challenging problem for nuclear theorists. In this work, the total β-decay half-lives and rates of 134-136Sn nuclei at different temperatures are calculated using various interactions developed in the light of recently available information on experimental binding energies and low-lying spectra of Sn, Sb and Te isotopes in 132Sn mass region. The calculation has been realized using Oxbash code in the frame work of the nuclear shell model. With these interactions, one can observe that the effective half-lives increase and the total decay rates decrease with increasing temperature. A deviation of half-lives starts at around 0.2 MeV and satures above 10 MeV, but the half-lives limit values are slightly different for all interactions.



. J. Blomoqvist, "Single-Particle States Around Double-Magic 132Sn" Proceedings of the 4th International Conference on Nuclei Far from Stability, CERN, Geneva report N° 81-09, (1981)pp. 536.

. L. Coraggio et al .,"Erratum : Shell-model structure of exotic 135Sb", Phys. Rev. C72, 057302 (2005).

. H. Grawe et al., "Shell structure from 100 Sn to 78 Ni: Implications for nuclear astrophysics", Eur. Phys. J. A25, 357 (2005).

. F. Minato and K. Hagino"β-decay half-lives at finite temperatures for N=82 isotones", Phys. Rev. C80, 065808 (2009).

. K. L. Kratz et al., "Gamow-Teller decay of 80Zn : shell structure and astrophysical implications", Phys. Rev. C38 ,1 (1988).

. G. Baur et al.,"Electromagnetic dissociation as a tool for nuclear structure and astrophysics", Prog. in Part. and Nucl. Phys.51, 487 (2003).

. B. A. Brown, A. A. Etchegoyen and W. D. H. Rae , NS. Godwin, “code OXBASH (unpublished)”, MSU-NSCL Report No. 524, (1985).

. W. T. Chou and E. K. Warburton,"Construction of shell-model interactions for Z≥ 50, N ≥82 nuclei: Predictions for A=133-134 β- decays" , Phys. Rev. C45, 1720 (1992).

. B. A. Brown et al., "Magnetic moments of the 2+ 1 states around 132Sn" Phys. Rev. C 71, 044317 (2005).

. S. Sarkar, M. Saha Sarkar "Shell Model Calculations with Modified Empirical Hamiltonian in 132Sn region", Eur. Phys. J. A 21, 61 (2004).

. L. Aissaoui et al.," Pairing gap energy correction in Shell model for the neutron-rich tin isotopes", Braz. J. of Phys., vol. 39, n° 4 (2009).

. N. Laouet et al., “Proton-Neutron Pairing Interaction in Neutron Rich A = 132 Nuclei”, AIP Conf. Proc. 1295, 230 (2010).

. G. Audi et al., "The AME2003 Atomic Mass Evaluation : Tables, Graphs and References", Nucl. Phys. A 729, 337 (2003).

. J. Terasaki et al.," Anomalous behavior of 2+ excitations around132Sn", Phys. Rev. C 66, 054313 (2002).

. B. Fogelberg et al., "Precise Atomic Mass Values near 132Sn: the resolution of a puzzle", Phys. Rev. Lett. 82, 1823 (1999).

. M. Chernykh et al., "The Role Of The 96 keV Level In The19O(β-)19F Process At Stellar Temperatures", The Astrophys. Jour. 633, L61 (2005).

. K. Langanke and G.M. Pinedo, "Rate tables for the weak processes of pf-shell nuclei in stellar environments", Atom. Data and Nucl. Data Tables 79 (2001).

. A. Aprahamian et al., "Nuclear structure aspects in nuclear astrophysics", Prog. in Part. and Nucl. Phys. 54, 535 (2005).

. K. Kar et al.,"Beta-Decay Rates of fp Shell Nuclei with A> 60 in Massive Stars at the presupernova stage", The Astrophys. Jour. 434, 662 (1994).

. N. B. Gove and M.J. Martin,"Log-f Tables for beta decay", Nucl. Data Tables 10 (1971).

. A. Korgul et al., "The neutron and proton two-particles nucleus 134Sb: New low-spin states observed in the decay of 134Sn and an estimate of the energy of the 7- isomer ", Eur. Phys. J. A 15, 181 (2002).

. J. Shergur et al.,"Level structure of odd-odd 134Sb populated in the beta decays of 134,135Sn", Phys. Rev. C 71, 064321 (2005).

. A. Korgul et al., "Properties of N=84, even-even nuclei populeted in the spontaneous fission of 248Cm", Eur. Phys. J. A 7, 167 (2000).

. M.N. Mineva et al., "A new µs isomer in 136Sb produced in the projectile fission of 238U", Eur. Phys. J. A 11, 9 (2001).

. He Wang et al., " Structure of 136Sn and the Z = 50 magicity", Prog. Theor. Exp. Phys. 023D02 (2014).

. G. S. Simpson et al.," Yrast 6+ Seniority Isomers of 136,138Sn", Phys. Rev. Lett. 113, 132502 (2014).

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.


Download data is not yet available.