Giant resonances in the doubly magic nucleus 48Ca from the (e, e'n) reaction.
Phys Rev Lett
; 85(14): 2913-6, 2000 Oct 02.
Article
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| MEDLINE
| ID: mdl-11005966
ABSTRACT
The 48Ca(e,e(')n) reaction has been investigated for excitation energies 11-25 MeV and momentum transfers 0.22-0.43 fm(-1) at the superconducting Darmstadt electron linear accelerator S-DALINAC. Electric dipole and quadrupole plus monopole strength distributions are extracted from a multipole decomposition of the spectra. Their fragmented structure is described by microscopic calculations allowing for coupling of the basic particle-hole excitations to more complex configurations. Comparison of the excitation spectrum of the residual nucleus 47Ca with statistical model calculations reveals a 39(5)% contribution of direct decay to the damping of the giant dipole resonance.
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Bases de datos:
MEDLINE
Idioma:
En
Revista:
Phys Rev Lett
Año:
2000
Tipo del documento:
Article
País de afiliación:
Alemania