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Observation of octupole excitations in $^{141}$Cs and $^{143}$Cs nuclei

Abstract : Excited states in $^{141}$Cs, populated in spontaneous fission of $^{248}$Cm, were studied by means of prompt-$\gamma$ spectroscopy, using the EUROGAM2 multidetector array. This work reports the first observation of octupole excitations in the $^{141}$Cs and $^{143}$Cs nuclei. The new data for $^{141,143}$Cs do not support theoretical predictions of octupole deformation in the neutron-rich Cs isotopes and indicates octupole correlations weaker than observed in the corresponding Ba isotones.
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http://hal.in2p3.fr/in2p3-00020411
Contributor : Yvette Heyd <>
Submitted on : Wednesday, February 4, 2004 - 8:18:50 AM
Last modification on : Thursday, April 23, 2020 - 2:26:20 PM

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  • HAL Id : in2p3-00020411, version 1

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W. Urban, T. Rzaca-Urban, J.L. Durell, W.R. Phillips, A.G. Smith, et al.. Observation of octupole excitations in $^{141}$Cs and $^{143}$Cs nuclei. Physical Review C, American Physical Society, 2004, 69, pp.017305-1-017305-4. ⟨in2p3-00020411⟩

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