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Efimov states in halo nuclei.
| Content Provider | Semantic Scholar |
|---|---|
| Author | Fedorov Jensen, Jørgen Arendt Riisager |
| Copyright Year | 1994 |
| Abstract | We investigate conditions for the occurrence of E mov states in the recently discovered halo nuclei. These states could appear in systems, where one neutron is added to a pronounced one-neutron halo nucleus. Detailed calculations of the properties of the states are presented and promising candidates are discussed. PACS numbers: 21.10.Gv, 21.45.+v Introduction. The E mov e ect was discovered theoretically as a peculiar behavior of three particles interacting by short-range two-body potentials [1]. The e ect appears when at least two of the binary subsystems have extremely large scattering lengths or bound states at nearly zero energy. Then a number of three-body bound states arises with enormous spatial extension and exceedingly small binding energies. Even when none of the binary subsystems are bound, the three-body system may have a huge number of bound states. One surprising consequence is that more three-body bound states can appear by weakening the potentials such that the scattering lengths increase. These states have not been seen experimentally yet, but their possible existence have been investigated theoretically in a few systems like the three 4 He-atoms ( 4 He-trimer) [2]. Such investigations have been rather demanding in terms of computer capacity as the extremely small binding energies and the large spatial extensions of the systems put strict requirements on the numerical accuracies. However, recently a new e cient method was developed for solving the Faddeev equations in coordinate space [3]. The method is particularly suitable for studying the E mov e ect. Halo nuclei are nuclear systems with unusually large spatial extensions and small binding energies [4]. They are mainly found on the neutron dripline, but may also appear as excited states of normal nuclei as well as on the proton dripline. The characteristic properties of halo nuclei o hand matches the description of E mov states rather well. The fact that they often are describable as twoor three-body systems furthermore improves the resemblance. The purpose of the present letter is to investigate the conditions for the occurrence of E mov states in the new structures called halo nuclei. This is only possible to do accurately and systematically due to the newly developed method [3]. The method. The Faddeev equations in coordinate space are solved by use of an expansion in a complete set of generalized angular functions |
| Starting Page | 2817 |
| Ending Page | 2820 |
| Page Count | 4 |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://preprints.cern.ch/archive/electronic/nucl-th/9409/9409018.ps.gz |
| Alternate Webpage(s) | http://cds.cern.ch/record/269152/files/9409018.pdf |
| Alternate Webpage(s) | http://arxiv.org/pdf/nucl-th/9409018v1.pdf |
| PubMed reference number | 10057203v1 |
| Volume Number | 73 |
| Issue Number | 21 |
| Journal | Physical review letters |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | Arabic numeral 0 CNS disorder Cell Nucleus Ectomesenchymal Chondromyxoid Tumor Energy, Physics Neutrons New type Protons body system |
| Content Type | Text |
| Resource Type | Article |
