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Using isotope shift for testing nuclear theory: the case of nobelium isotopes

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 نشر من قبل Vladimir Dzuba
 تاريخ النشر 2020
  مجال البحث فيزياء
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We calculate field isotope shifts for nobelium atoms using nuclear charge distributions which come from different nuclear models. We demonstrate that comparing calculated isotope shifts with experiment can serve as a testing ground for nuclear theories. It also provides a way of extracting parameters of nuclear charge distribution beyond nuclear RMS radius, e.g. parameter of quadrupole deformation $beta$. We argue that previous interpretation of the isotope measurements in terms of $delta langle r^2 rangle$ between $^{252,254}$No isotopes should be amended when nuclear deformation is taken into account. We calculate isotope shifts for other known isotopes and for hypothetically metastable isotope $^{286}$No for which the predictions of nuclear models differ substantially.



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