Structure of deuterons in nuclei

Although the isoscalar (T = 0) nucleon pair forms a bound state in vacuum, it is not evident whether the isoscalar pair condensation exists in nuclei. We perform calculations of the transition density for two-nucleon removal modes, to study deuteron-like pair states with spin S = 1 and isospin T = 0 in 16O. The isoscalar proton-neutron (pn) pair states in the nucleus vary, depending on the strength of the isoscalar pn pairing interaction and on the location of the pair inside the nucleus.