https://doi.org/10.1140/epja/i2008-10684-4
Regular Article - Theoretical Physics
Scaling laws and higher-order effects in Coulomb excitation of neutron halo nuclei
1
Excellence Cluster Universe, Technische Universität München, Boltzmannstraße 2, D-85748, Garching, Germany
2
GSI Helmholtzzentrum für Schwerionenforschung GmbH, Planckstraße 1, D-64291, Darmstadt, Germany
3
Institut für Kernphysik, Forschungszentrum Jülich, D-52425, Jülich, Germany
4
Jülich Centre for Hadron Physics, Forschungszentrum Jülich, D-52425, Jülich, Germany
* e-mail: g.baur@fz-juelich.de
Received:
26
August
2008
Revised:
6
November
2008
Accepted:
6
November
2008
Published online:
24
November
2008
Essential properties of halo nuclei can be described in terms of a few low-energy constants. For neutron halo nuclei, analytical results can be found for wave functions and electromagnetic transition matrix elements in simple but well-adapted models. These wave functions can be used to study nuclear reactions; an especially simple and instructive example is Coulomb excitation. A systematic expansion in terms of small parameters can be given. We present scaling laws for excitation amplitudes and cross-sections. The results can be used to analyze experiments like 11Be Coulomb excitation. They also serve as benchmark tests for more involved reaction theories.
PACS: 25.70.De Coulomb excitation – / 23.20.Js Multipole matrix elements – / 27.20.+n 6
A
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© SIF, Springer-Verlag Berlin Heidelberg, 2008