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Half-life systematics across the N=126 shell closure: role of the first-forbidden transitions in the beta decay of heavy, neutron-rich nuclei.

Morales, A I*; Benlliure, J*; Kurtukian-Nieto, T*; 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*; Boutachikov, 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*; Hoischen, R*; Kojouharov, I*; Kurz, N*; Lalkovski, S*; Liu, Z*; Mihai, C*; Molina, F*; Mucher, 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 the first-forbidden transitions in the beta decay of heavy, neutron-rich nuclei. Phys. Rev. Lett., 113 (2). 022702

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Abstract

This lette reports on a systematic study of beta-decay half-lives of neutron-rich nuclei around doubly magic 208Pb. The lifetimes of the 126-neutron shell isotone 204Pt and the neighboring 200-202Ir, 203Pt, 204Au are presented together with other 19 half-lives measured during the stopped beam campaign of the rare isotopes investigations at GSI collaboration. The results constrain the main nuclear theories used in calculation of r-process nucleosynthesis.

Item Type: Article
Keywords: nuclear structure, beta decay, nuclear half-lives
Subjects: Ionising Radiation
Ionising Radiation > Radioactivity
Identification number/DOI: 10.1103/PhysRevLett.113.022702
Last Modified: 02 Feb 2018 13:14
URI: http://eprintspublications.npl.co.uk/id/eprint/6351

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