Collective properties and shapes of nuclei at very high spins

The transition quadrupole moments, Q t , of rotational bands in the neutronrich, even-mass 102−108 Mo and 108−112 Ru nuclei were measured in the 8 to 16 spin range with the Doppler-shift attenuation method. The nuclei were populated as fission fragments from 252 Cf fission. The detector setup consisted of the Gammasphere spectrometer and the HERCULES fast-plastic array. At moderate spin, the Q t moments are found to be reduced with respect to the values near the ground states. Attempts to describe the observations in mean-field-based models, specifically cranked relativistic Hartree-Bogoliubov theory, illustrate the challenge theory faces and the difficulty to infer information on γ softness and triaxiality from the data.

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Lifetime measurements in182,186Pt

Walpe

Garg

Naguleswaran

et al. 2012

Phys. Rev. C

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Collective properties and shapes of nuclei at very high spins

Cited by 3 publications

References 15 publications

The loss of collectivity at high spins in 164Yb and its neighboring even-even nuclei

The loss of collectivity at high spins in 164Yb and its neighboring even-even nuclei

High-spin transition quadrupole moments in neutron-rich Mo and Ru nuclei: Testing γ softness?

Lifetime measurements in182,186Pt

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