Relativistic Hartree-Bogoliubov theory in coordinate space is used to describe the chain of zirconium isotopes reaching from ¹¹⁶Zr to the drip line nucleus ¹⁴⁰Zr. Pairing correlations are taken into account by a density dependent force of zero range. For neutron numbers larger than the magic number N0ex0ex=0ex0ex82 a giant neutron halo outside the core of ¹²²Zr is predicted. It is formed by up to six neutrons.
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Meng et al. (1998) studied this question.
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