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Closed Access item The nuclear structure of 223Fr

Authors:Kurcewicz, W.
Løvhøiden, G.
Thorsteinsen, T. F.
García Borge, María José
Burke, D. G.
Cronqvist, M.
Gabelmann, H.
Gietz, H.
Hill, P.
Kaffrell, N.
Naumann, R. A.
Nybø, K.
Nyman, G.
Rogowski, J.
Keywords:Rn-223 [From Th-232 (P, 5p5n), Mass Separation], Measured E-gamma, I-gamma, EE, I(ce), Gamma-Gamma-coincidences, Fr-223 deduced levels, ICC, multipolarities, I-pi, rotational bands, dipole moment, Ge, Si(Li) detectors, mini-orange spectrometer
Issue Date:30-Mar-1992
Citation:Nuclear Physics A 539(3): 451-477 (1992)
Abstract:The γ-rays following the β- decay of Rn-223 have been investigated by means of γ-ray singles including multispectrum analysis, and γγ-coincidence measurements using Ge detectors. Multipolarities of 38 transitions in Fr-223 have been established by measuring conversion electrons with a mini-orange electron spectrometer. Most of the observed transitions could be placed in a level scheme comprising 53 excited states of Fr-223. The level structure is interpreted in terms of K(π) = (3/2)± and (1/2)± parity doublet bands, and a second K(π) = (3/2)± higher-lying parity doublet. The experimental data are compared with the theoretical predictions of the reflection-asymmetric rotor model.
Description:27 pages, 6 figures, 3 tables.
Publisher version (URL):http://dx.doi.org/10.1016/0375-9474(92)90287-T
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