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Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/128086
Título

1- and 2+ discrete states in Zr 90 populated via the (O 17, O ′ 17 γ) reaction

AutorCrespi, F. C. L.; Bracco, A.; Nicolini, R.; Lanza, E. G.; Gadea, Andrés ; Jungclaus, Andrea ; Valiente-Dobón, J. J.
Fecha de publicación24-feb-2015
EditorAmerican Physical Society
CitaciónPhysical Review C - Nuclear Physics 91: 024323 (2015)
Resumen© 2015 American Physical Society. 2+ and 1- states in Zr90 were populated via the (O17,O′17γ) reaction at 340 MeV. The γ decay was measured with high resolution using the AGATA (advanced γ tracking array demonstrator array). Differential cross sections were obtained at few different angles for the scattered particle. The results of the elastic scattering and inelastic excitation of 2+,3-, and 1- states are compared with distorted-wave Born approximation (DWBA) calculations, using both the standard collective form factor and a form factor obtained by folding microscopically calculated transition densities. This allowed to extract the isoscalar component of the 1- state at 6.424 MeV. The comparison of the present (O17,O′17γ) data with existing (γ,γ′) and (p,p′) data in the corresponding region of the γ continuum (6-11 MeV), characterized by a large E1 component, shows completely different behaviors of the cross section as a function of the nuclear excitation energy. The comparison of the data with DWBA calculations suggests a decrease of the isoscalar strength in the cross section with increasing excitation energy.
DescripciónF.C.L. Crespi et al.; 9 pags.; 9 figs.; PACS number(s): 24.30.Cz, 24.10.Eq, 25.70.Bc, 27.60.+j
Versión del editorhttp://dx.doi.org/10.1103/PhysRevC.91.024323
URIhttp://hdl.handle.net/10261/128086
DOI10.1103/PhysRevC.91.024323
Identificadoresdoi: 10.1103/PhysRevC.91.024323
issn: 1089-490X
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