Excited nuclei in neutron star crusts
  The paper considers the chains of successive electron capture reactions by nuclei of the iron group which take place in the crystal structures of neutron star envelopes. It is shown that as a result of such reactions the daughter nuclei in excited states accumulate within certain layers of neutron star crusts. The phonon model of interactions is proposed between the excited nuclei in the crystalline structure, as well as formation of highly excited nuclear states which emit neutrons and higher energy photons. 
Nurgali Takibayev, Kiyoshi Kato, Diana Nasirova
nucl-th astro-ph.SR