Probing Nilsson states in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mrow /><mml:mn>233</mml:mn></mml:msup></mml:math>U

Kotthaus, T.; Reiter, P.; Hess, H.; Kalkühler, M.; Wendt, A.; Wiens, A.; Hertenberger, R.; Morgan, T.; Thirolf, P. G.; Wirth, H.‐F.

doi:10.1103/physrevc.84.014334

Cited by 6 publications

(3 citation statements)

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“…As the octupole collectivity weakens along the N = 141 isotonic chain 229 Ra− 231 Th− 233 U, the [752]5/2 − excitation energy increases. 229 Ra is considered to lie within the transitional region to static octupole deformation, whereas 233 U does not [17]. We note that the energy of this state appears to be substantially lower in 231 U than 233 U, based on the present work (see Table 5), suggesting that 231 U may be a more favourable candidate.…”

Section: Discussionmentioning

confidence: 60%

“…One experimental fingerprint (in odd nuclei) is a pair of alternating-parity bands connected by enhanced E1 transitions. For example, 229 88 Ra 141 , exhibits strong octupole correlations, and the [752]5/2 − and [633]5/2 + orbitals are parity partners [17]. As the octupole collectivity weakens along the N = 141 isotonic chain 229 Ra− 231 Th− 233 U, the [752]5/2 − excitation energy increases.…”

Section: Discussionmentioning

confidence: 99%

“…The excitation energy of the ν[752]5/2 − state in 231 U is tentative. The other data are from[17] K − g R ) 2 K 2 (the Clebsch-Gordan coefficients in Eqn. 6 are weak functions of I and K ).…”

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confidence: 99%

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First observation of rotational bands in the nucleus $$^{231}$$U

Roux,

Bark,

Lawrie

et al. 2024

Eur. Phys. J. A

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This work reports the first rotational bands observed in the neutron-deficient nucleus $$^{231}$$ 231 U. Excited states were populated in the $$^{232}$$ 232 Th($$\alpha $$ α ,5n) reaction at a beam energy of 52 MeV. Coincident decay $$\gamma $$ γ -rays were measured with the high-purity germanium detectors of the afrodite spectrometer array, in conjunction with a recoil detector to discriminate against the fission background. The bands are interpreted as the ground-state band $$\nu [633]5/2^{+}$$ ν [ 633 ] 5 / 2 + , yrast band $$\nu [752]5/2^{-}$$ ν [ 752 ] 5 / 2 - , and an excited band $$\nu [631]3/2^{+}$$ ν [ 631 ] 3 / 2 + . Configuration assignments are supported by Cranked Shell Model and B(M1)/B(E2) calculations. The excitation energy of the $$\nu [752]5/2^{-}$$ ν [ 752 ] 5 / 2 - bandhead is suggested to be 113.0 keV.

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Section: Discussionmentioning

confidence: 60%

Section: Discussionmentioning

confidence: 99%