| Página principal > Three-body correlations in electromagnetic dissociation of Borromean nuclei: The 6 He case |
| Published Articles | |
| Title | Three-body correlations in electromagnetic dissociation of Borromean nuclei: The 6 He case |
| Author(s) | Chulkov, L V (Darmstadt, GSI ; Kurchatov Inst., Moscow) ; Simon, H (Darmstadt, GSI) ; Thompson, I J (Surrey U.) ; Aumann, T (Darmstadt, GSI ; Mainz U., Inst. Kernphys.) ; Borge, M J G (Madrid, Inst. Estructura Materia) ; Elze, Th W (Frankfurt U., Inst. Kernphys.) ; Emling, H (Darmstadt, GSI) ; Geissel, H (Darmstadt, GSI) ; Grigorenko, L V (Darmstadt, GSI ; Kurchatov Inst., Moscow) ; Hellström, M (Darmstadt, GSI) ; Jonson, B (Goteborg, ITP) ; Kratz, J W V (Mainz U., Inst. Kernphys.) ; Kulessa, R (Jagiellonian U.) ; Markenroth, K (Goteborg, ITP) ; Meister, M (Darmstadt, GSI ; Goteborg, ITP) ; Münzenberg, G (Darmstadt, GSI) ; Nickel, F (Darmstadt, GSI) ; Nilsson, T (CERN) ; Nyman, G (Goteborg, ITP) ; Pribora, V (Kurchatov Inst., Moscow) ; Richter, A (CST, Darmstadt) ; Riisager, K (Aarhus U.) ; Scheidenberger, C (Darmstadt, GSI) ; Schrieder, G (CST, Darmstadt) ; Tengblad, O (Madrid, Inst. Estructura Materia) ; Zhukov, M V (Goteborg, ITP) |
| Publication | 2005 |
| Number of pages | 20 |
| In: | Nucl. Phys. A 759 (2005) 23-42 |
| DOI | 10.1016/j.nuclphysa.2005.05.001 |
| Subject category | Nuclear Physics - Experiment |
| Abstract | Dissociation of 6 He on a lead target has been studied at 240 MeV/u. The four-momenta of the two neutrons in coincidence with α -particles have been measured and used to reconstruct the three-body energy and angular correlations in the final state. For the first time, three-body correlations were included in the analysis of the 6 He dissociation data, and compared with calculations assuming a dipole mode for the electromagnetic dissociation. In addition, the experimental data have been analyzed using a series expansion of the final transition amplitude into hyperspherical functions, showing the importance of both nn and αn final-state interactions. It is shown that the dissociation process is governed by a transition of one neutron from the p -shell in the 6 He ground state to the s -shell in the continuum further indicating that the role of the transition through an intermediate 5 He( 3 / 2 − ) state is more important than expected. |
| Copyright/License | Elsevier B.V. |