Nov, 2013
Di-neutron correlation in monopole two-neutron transfer modes in the Sn isotope chain
PHYSICAL REVIEW C
- ,
- Volume
- 88
- Number
- 5
- Language
- English
- Publishing type
- Research paper (scientific journal)
- DOI
- 10.1103/PhysRevC.88.054308
- Publisher
- AMER PHYSICAL SOC
We study microscopic structures of monopole pair vibrational modes and associated two-neutron transfer amplitudes in neutron-rich Sn isotopes by means of the linear response formalism of the quasiparticle random phase approximation (QRPA). For this purpose we introduce a method to decompose the transfer amplitudes with respect to two-quasiparticle components of the QRPA eigenmode. It is found that pair-addition vibrational modes in neutron-rich Sn132-140 and the pair rotational modes in Sn142-150 are commonly characterized by coherent contribution of quasaiparticle states having high orbital angular momenta l greater than or similar to 5, which suggests transfer of a spatially correlated neutron pair. The calculation also predicts a high-lying pair vibration, the giant pair vibration, emerging near the one-neutron separation energy in Sn110-130, and we find that they have the same di-neutron characters as that of the low-lying pair vibration in Sn132-140.
- Link information
- ID information
-
- DOI : 10.1103/PhysRevC.88.054308
- ISSN : 0556-2813
- eISSN : 1089-490X
- Web of Science ID : WOS:000326823900001