Studies of pear-shaped nuclei using accelerated radioactive beams

@article{Gaffney2013StudiesOP,
  title={Studies of pear-shaped nuclei using accelerated radioactive beams},
  author={L. Gaffney and P. Butler and M. Scheck and A. Hayes and F. Wenander and M. Albers and B. Bastin and C. Bauer and A. Blazhev and S. B{\"o}nig and N. Bree and J. Cederk{\"a}ll and T. Chupp and D. Cline and T. Cocolios and T. Davinson and H. Witte and J. Diriken and T. Grahn and A. Herzáň and M. Huyse and D. Jenkins and D. Joss and N. Kesteloot and J. Konki and M. Kowalczyk and T. Kr{\"o}ll and E. Kwan and R. Lutter and K. Moschner and P. Napi{\'o}rkowski and J. Pakarinen and M. Pfeiffer and D. Radeck and P. Reiter and K. Reynders and S. Rigby and L. Robledo and M. Rudigier and S. Sambi and M. Seidlitz and B. Siebeck and T. Stora and P. Thoele and P. Duppen and M. Vermeulen and M. Schmid and D. Voulot and N. Warr and K. Wimmer and K. Wrzosek-Lipska and C. Wu and M. Zielińska},
  journal={Nature},
  year={2013},
  volume={497},
  pages={199-204}
}
There is strong circumstantial evidence that certain heavy, unstable atomic nuclei are ‘octupole deformed’, that is, distorted into a pear shape. This contrasts with the more prevalent rugby-ball shape of nuclei with reflection-symmetric, quadrupole deformations. The elusive octupole deformed nuclei are of importance for nuclear structure theory, and also in searches for physics beyond the standard model; any measurable electric-dipole moment (a signature of the latter) is expected to be… Expand
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