Half-Life Systematics across the N=126 Shell Closure:Role of First-Forbidden Transitions in the beta Decay of Heavy Neutron-Rich Nuclei

Autor: Morales, AI, Benlliure, J, Kurtukian-Nieto, T, Schmidt, K-H, Verma, S, Regan, PH, Podolyak, Z, Gorska, M, Pietri, S, Kumar, R, Casarejos, E, Al-Dahan, N, Algora, A, Alkhomashi, N, Alvarez-Pol, H, Benzoni, G, Blazhev, A, Boutachkov, P, Bruce, AM, Caceres, LS, Cullen, IJ, Bacelar, AMD, Doornenbal, P, Estevez-Aguado, ME, Farrelly, G, Fujita, Y, Garnsworthy, AB, Gelletly, W, Gerl, J, Grebosz, J, Hoischen, R, Kojouharov, I, Kurz, N, Lalkovski, S, Liu, Z, Mihai, C, Molina, F, Muecher, D, Rubio, B, Shaffner, H, Steer, SJ, Tamii, A, Tashenov, S, Valiente-Dobon, JJ, Walker, PM, Wollersheim, HJ, Woods, PJ
Jazyk: angličtina
Rok vydání: 2014
Předmět:
Zdroj: Morales, A I, Benlliure, J, Kurtukian-Nieto, T, Schmidt, K-H, Verma, S, Regan, P H, Podolyak, Z, Gorska, M, Pietri, S, Kumar, R, Casarejos, E, Al-Dahan, N, Algora, A, Alkhomashi, N, Alvarez-Pol, H, Benzoni, G, Blazhev, A, Boutachkov, P, Bruce, A M, Caceres, L S, Cullen, I J, Bacelar, A M D, Doornenbal, P, Estevez-Aguado, M E, Farrelly, G, Fujita, Y, Garnsworthy, A B, Gelletly, W, Gerl, J, Grebosz, J, Hoischen, R, Kojouharov, I, Kurz, N, Lalkovski, S, Liu, Z, Mihai, C, Molina, F, Muecher, D, Rubio, B, Shaffner, H, Steer, S J, Tamii, A, Tashenov, S, Valiente-Dobon, J J, Walker, P M, Wollersheim, H J & Woods, P J 2014, ' Half-Life Systematics across the N=126 Shell Closure : Role of First-Forbidden Transitions in the beta Decay of Heavy Neutron-Rich Nuclei ', Physical Review Letters, vol. 113, no. 2, 022702 . https://doi.org/10.1103/PhysRevLett.113.022702
DOI: 10.1103/PhysRevLett.113.022702
Popis: This Letter reports on a systematic study of beta-decay half-lives of neutron-rich nuclei around doubly magic Pb-208. The lifetimes of the 126-neutron shell isotone Pt-204 and the neighboring Ir200-202, Pt-203, Au-204 are presented together with other 19 half-lives measured during the "stopped beam" campaign of the rare isotope investigations at GSI collaboration. The results constrain the main nuclear theories used in calculations of r-process nucleosynthesis. Predictions based on a statistical macroscopic description of the first-forbidden beta strength reveal significant deviations for most of the nuclei with N
Databáze: OpenAIRE
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