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Area of Science:

  • Nuclear Physics
  • Quantum Mechanics

Background:

  • Understanding the rotational properties of heavy atomic nuclei is crucial for nuclear structure theory.
  • Transfermium nuclei exhibit complex rotational behavior that challenges existing models.

Purpose of the Study:

  • To investigate the rotational properties of transfermium nuclei across their full deformation space.
  • To microscopically explain the observed differences in rotational behavior, particularly in Nobelium isotopes.

Main Methods:

  • Employed a shell-model-like approach within cranking covariant density functional theory.
  • Utilized a three-dimensional lattice to treat pairing correlations, deformations, and moments of inertia self-consistently.
  • Used a well-determined universal density functional without adjustable parameters.

Main Results:

  • Successfully reproduced kinematic and dynamic moments of inertia for ^{252}No, ^{254}No, ^{254}Rf, and ^{256}Rf.
  • Identified octupole deformation as the primary cause for the differing rotational behavior between ^{252}No and ^{254}No.
  • Provided a microscopic explanation for the rotational behavior of Nobelium isotopes.

Conclusions:

  • The study offers a microscopic solution to the puzzle of Nobelium isotope rotational behavior.
  • Emphasizes the importance of considering octupole deformation alongside higher-order deformations like hexacontetrapole (β_{60}) in transfermium nuclei.