Observation of octupole excitations in $^{141}$Cs and $^{143}$Cs nuclei - IN2P3 - Institut national de physique nucléaire et de physique des particules Access content directly
Journal Articles Physical Review C Year : 2004

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

W. Urban
  • Function : Author
T. Rzaca-Urban
  • Function : Author
J.L. Durell
  • Function : Author
W.R. Phillips
  • Function : Author
A.G. Smith
  • Function : Author
B.J. Varley
  • Function : Author
I. Ahmad
  • Function : Author


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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Dates and versions

in2p3-00020411 , version 1 (04-02-2004)


  • HAL Id : in2p3-00020411 , version 1


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, 2004, 69, pp.017305-1-017305-4. ⟨in2p3-00020411⟩
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