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Title

β- decay of 65Mn to 65Fe

AuthorsOlaizola, B.; Fraile, Luis M. ; Mach, H.; Aprahamian, A.; Briz, José Antonio ; Cal-González, J.; Ghita, D.; Köster, Ulli; Kurcewicz, W.; Lesher, S. R.; Pauwels, D.; Picado, E.; Poves, Alfredo ; Radulov, D.; Simpson, G. S.; Udías, J. M
Keywordsβ‾
⁶⁵Fe
⁶⁵Mn
Radioactivity
B(XL)
Deduced ⁶⁵Fe
T ⅟₂
Measured ϒ ̶ ϒ coincidences
LaBr₃(Ce) detectors
HPGw
Fasttiming βϒ ̶ ϒ(t) method
Issue Date2013
PublisherAmerican Physical Society
CitationPhysical Review C - Nuclear Physics 88: 044306 (2013)
AbstractThe low-energy structure of 65Fe has been studied by means of γ and fast-timing spectroscopy at the ISOLDE facility, CERN. A level scheme of 65Fe populated following the β-decay of 65Mn was established for the first time. It includes 41 levels and 85 transitions. The excitation energy of the β-decaying isomer in 65Fe has been precisely determined at 393.7(2) keV. The β-delayed neutron emission branch was measured as Pn = 7.9(12)%, which cannot be reconciled with the previously reported value of 21.0(5)%. Four γ rays and four excited states in 64Fe were identified as being populated following the β-n decay. Four lifetimes and five lifetime limits in the subnanosecond range have been measured using the advanced time-delayed βγγ(t) method. The level scheme is compared with shell-model calculations. Tentative spin and parity assignments are proposed based on the observed transition rates, the calculations, and the systematics of the region. © 2013 American Physical Society.
URIhttp://hdl.handle.net/10261/103669
DOI10.1103/PhysRevC.88.044306
Identifiersdoi: 10.1103/PhysRevC.88.044306
issn: 0556-2813
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