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Title

Breakup of three particles within the adiabatic expansion method

AuthorsGarrido, Eduardo ; Kievsky, A.; Viviani, M.
Issue Date2014
PublisherAmerican Physical Society
CitationPhysical Review C - Nuclear Physics 90: 014607 (2014)
AbstractGeneral expressions for the breakup cross sections in the laboratory frame for 1+2 reactions are given in terms of the hyperspherical adiabatic basis. The three-body wave function is expanded in this basis and the corresponding hyperradial functions are obtained by solving a set of second order differential equations. The S matrix is computed by using two recently derived integral relations. Even though the method is shown to be well suited to describe 1+2 processes, there are particular configurations in the breakup channel (for example, those in which two particles move away close to each other in a relative zero-energy state) that need a huge number of basis states. This pathology manifests itself in the extremely slow convergence of the breakup amplitude in terms of the hyperspherical harmonic basis used to construct the adiabatic channels. To overcome this difficulty the breakup amplitude is extracted from an integral relation as well. For the sake of illustration, we consider neutron-deuteron scattering. The results are compared to the available benchmark calculations. ©2014 American Physical Society
Description20 pags. ; 7 figs. ; 2 tabls. ; A-F Apps. ; PACS number(s): 25.10.+s, 03.65.Nk, 31.15.xj
URIhttp://hdl.handle.net/10261/110181
DOI10.1103/PhysRevC.90.014607
Identifiersdoi: 10.1103/PhysRevC.90.014607
issn: 0556-2813
Appears in Collections:(CFMAC-IEM) Artículos
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