Beta decay of 66Mn to the N = 40 nucleus 66Fe. (2nd November 2017)

• Record Type: Journal Article
• Authors: Olaizola, B; Fraile, L M; Mach, H; Poves, A; Aprahamian, A; Briz, J A; Cal-González, J; Ghiţa, D; Köster, U; Kurcewicz, W; Lesher, S R; Pauwels, D; Picado, E; Radulov, D; Simpson, G S; Udías, J M
• Is Part Of: Journal of physics. Volume 44:Number 12(2017:Dec.)
• Publication Date: 2017-11-02
• Subjects: 66Mn -- 66Fe -- 65Fe -- 65Co -- 65Ni -- β− decay -- fast-timing βγγ(t) method; 21.10.-k -- 21.10.Tg -- 23.20.Lv -- 27.50.+e; Nuclear physics -- Periodicals; Particles (Nuclear physics) -- Periodicals; Physique nucléaire -- Périodiques; Particules (Physique nucléaire) -- Périodiques; Kernfysica; Elementaire deeltjes; 539.7
• DOI: 10.1088/1361-6471/aa915e
• Languages: English
• ISSNs: 0954-3899

Abstract

Abstract: The low energy structure of 66 Fe was studied by means of γ - and fast-timing spectroscopy at the ISOLDE/CERN facility. The level scheme of 66 Fe populated following the β − decay of 66 Mn was established. It confirms and further expands the level scheme from recent publications. The β -delayed neutron emission branch was measured and γ rays in 65 Fe were observed following the β –n decay for the first time. The half lives of the 2 1 + state and four other states of 66 Fe were measured using the advanced time-delayed β γ γ ( t ) method. These results are compared with large-scale shell-model calculations based on the Lenzi–Nowacki–Poves–Sieja interaction. The β -decay of 66 Mn to 66 Fe has been calculated as well, and log( ft ) values derived. Spin and parity assignments are proposed based on the experimental information and the new calculations.