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The pygmy dipole resonance in neutron-rich nuclei
| Content Provider | Scilit |
|---|---|
| Author | Hung, Nguyen Quang Kiet, Hoang Anh Tuan Duc, Huynh Ngoc Chuong, Nguyen Thi |
| Copyright Year | 2016 |
| Description | Journal: Journal of Physics: Conference Series The pygmy dipole resonance (PDR), which has been observed via the enhancement of the electric dipole strength E1 of atomic nuclei, is studied within a microscopic collective model. The latter employs the Hartree-Fock (HF) method with effective nucleon-nucleon interactions of the Skyrme types plus the random-phase approximation (RPA). The results of the calculations obtained for various even-even nuclei such as$ ^{16-28}$O,$ ^{40-58}$Ca,$ ^{100-120}$Sn, and$ ^{182-218}$Pb show that the PDR is significantly enhanced when the number of neutrons outside the stable core of the nucleus is increased, that is, in the neutron-rich nuclei. As the result, the relative ratio between the energy weighted sum of the strength of the PDR and that of the GDR (giant dipole resonance) does not exceed 4%. The collectivity of the PDR and GDR states will be also discussed. |
| Related Links | http://iopscience.iop.org/article/10.1088/1742-6596/726/1/012026/pdf |
| ISSN | 17426588 |
| e-ISSN | 17426596 |
| DOI | 10.1088/1742-6596/726/1/012026 |
| Journal | Journal of Physics: Conference Series |
| Volume Number | 726 |
| Language | English |
| Publisher | IOP Publishing |
| Publisher Date | 2016-06-23 |
| Access Restriction | Open |
| Subject Keyword | Journal: Journal of Physics: Conference Series Nuclear Physics Neutron Rich Nuclei Pygmy Dipole Resonance |
| Content Type | Text |
| Resource Type | Article |
| Subject | Physics and Astronomy |
