| Title |
Core-excitation effects in O-20(d,p )21O transfer reactions: suppression or enhancement? |
| Authors |
Deltuva, Arnoldas ; Jurčiukonis, Darius ; Norvaišas, Egidijus |
| DOI |
10.1016/j.physletb.2017.03.069 |
| Full Text |
|
| Is Part of |
Physics letters B.. Amsterdam : Elsevier Science BV. 2017, Vol. 769, p. 202-207.. ISSN 0370-2693. eISSN 1873-2445 |
| Keywords [eng] |
nuclear reactions ; core excitation ; transfer |
| Abstract [eng] |
20O(d, p)21Otransfer reactions are described using momentum-space Faddeev-type equations for transition operators and including the vibrational excitation of the 20O core. The available experimental cross section data at 10.5 MeV/nucleon beam energy for the 21O ground state 52+and excited state 12+are quite well reproduced by our calculations including the core excitation. Its effect can be roughly simulated reducing the single-particle cross section by the corresponding spectroscopic factor. Consequently, the extraction of the spectroscopic factors taking the ratio of experimental data and single-particle cross section at this energy is a reasonable procedure. However, at higher energies core-excitation effects are much more complicated and have no simple relation to spectroscopic factors. We found that core-excitation effects are qualitatively very different for reactions with the orbital angular momentum transfer =0and =2, suppressing the cross sections for the former and enhancing for the latter, and changes the shape of the angular distribution in both cases. Furthermore, the core-excitation effect is a result of a complicated interplay between its contributions of the two-and three-body nature. |
| Published |
Amsterdam : Elsevier Science BV |
| Type |
Journal article |
| Language |
English |
| Publication date |
2017 |
