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Título

Measurements of multipolarities in 225Ra

AutorAndersen, E.; García Borge, María José ; Burke, D. G.; Gietz, H.; Hill, P.; Kaffrell, N.; Kurcewicz, W.; Løvhøiden, G.; Mattsson, S.; Naumann, R. A.; Nybø, K.; Nyman, G.; Thorsteinsen, T. F.
Palabras claveRadioactivity 225Fr (β-) [from Th, U (p, spallation)]
Measured Ee, I(ce), γγ-, eγ-coincidences
225Ra deduced levels, ICC, multipolarities, I(π)
UC2 and ThC2 targets
On-line mass separation
Ge, Si(Li) detectors
Mini-orange spectrometer
Fecha de publicación9-ene-1989
EditorElsevier
CitaciónNuclear Physics A 491(2): 290-300 (1989)
ResumenMultipolarities of 45 transitions in 225Ra have been established by investigating the radiations associated with the β− decay of 225Fr. The study includes β−, e− and γ-singles spectra, e−γ- and γγ-coincidence measurements. The conversion electrons were measured with a mini-orange electron spectrometer, and the γ-spectra with Ge detectors. The multipolarities obtained from the measured conversion coefficients support the assignments of spin-parity doublets thus giving evidence for a stable octupole deformation of this nucleus. The negative parity of the 394.2 keV level established in the present work indicates that this level is a candidate for the parity-doublet partner of the (5/2)+ state at 236.3 keV.
Descripción11 pages, 3 tables, 2 figures.
Versión del editorhttp://dx.doi.org/10.1016/0375-9474(89)90704-5
URIhttp://hdl.handle.net/10261/16266
DOI10.1016/0375-9474(89)90704-5
ISSN0375-9474
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