<i>Electromagnetic Excitation: Theory of Coulomb Excitation with Heavy Ions</i>

Alder, K.; Winther, A.; Gammel, J. Tinka

doi:10.1063/1.3023907

Cited by 81 publications

(106 citation statements)

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“…The data were compared with semiclassical and coupled-channels calculations. The semiclassical calculations, based on the first-order Coulomb theory of Alder and Winther [98] (which gives a breakup probability for a pure dipole excitation) underestimated the data. On the other hand, the CDCC calculation reproduced the experimental breakup cross sections quite well.…”

Section: Breakup In Thementioning

confidence: 99%

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Elastic scattering, fusion, and breakup of light exotic nuclei

2016

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Abstract. The present status of fusion reactions involving light (A < 20) radioactive projectiles at energies around the Coulomb barrier (E < 10 MeV per nucleon) is reviewed, emphasizing measurements made within the last decade. Data on elastic scattering (providing total reaction cross section information) and breakup channels for the involved systems, demonstrating the relationship between these and the fusion channel, are also reviewed. Similarities and differences in the behavior of fusion and total reaction cross section data concerning halo nuclei, weakly-bound but less exotic projectiles, and strongly-bound systems are discussed. One difference in the behavior of fusion excitation functions near the Coulomb barrier seems to emerge between neutron-halo and proton-halo systems. The role of charge has been investigated by comparing the fusion excitation functions, properly scaled, for different neutron-and proton-rich systems. Possible physical explanations for the observed differences are also reviewed.

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Section: Breakup In Thementioning

confidence: 99%

“…The figure shows the results of semiclassical Coulomb excitation theory as described in ref. [98], where three-body theoretical (dashed line) and experimental (dot-dashed line) B(E1) distribution were used. As can be seen in the figure, the latter calculation did not reproduce the data.…”

Section: Breakup Of 11 LImentioning

confidence: 99%

Elastic scattering, fusion, and breakup of light exotic nuclei

2016

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“…The energy dependence in the latter case is neglected. [4]. As can be seen, the reaction is dominated by E1 transitions from the d ground state to the p and f continua.…”

Section: Theoretical Predictionsmentioning

confidence: 87%

“…Second, the radiative capture being dominated by E1 transitions at stellar energies, the influence of higher multipoles of the Coulomb interaction in the breakup process must be negligible. Finally, the direct link between the Coulomb-breakup cross section and the radiative capture one can only be made at the first order of the perturbation theory [4]. The dissociation must thus occur in one step from the bound state to the continuum, i.e.…”

Section: Introductionmentioning

confidence: 99%

¹⁷F BREAKUP REACTIONS: A TOUCHSTONE FOR INDIRECT MEASUREMENTS

Sfienti

Raciti

Capel

et al. 2011

Int. J. Mod. Phys. E

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Abstract. Dissociation has become an essential tool in several domains of nuclear physics. It provides useful information about the structure of halo nuclei, and Coulomb breakup can be used as an indirect method to measure radiative-capture cross sections at stellar energies. Though simple it may seem, this indirect technique relies on peculiar assumptions. Recent theoretical analyses of the Coulomb breakup of 8 B have shown that these assumptions are not all satisfied. Whereas many experimental investigations on such a phenomenon have been conducted on 8 B, the case of 17 F has been poorly addressed up to now. An exclusive study of 17 F breakup reactions has thus been performed at the FRIBs facility of the Laboratori Nazionali del Sud, Catania (Italy). The experimental setup and the detector systems allowed the measurement, event-by-event, of the X-Y coordinates of the interaction point on the target as well as the momenta and angles of all outgoing decay particles with a geometrical efficiency of 72% and a resolution of approximately 300 keV. The first results and preliminary model comparison are reported.

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“…The interaction time between the projectile and target is long enough to populate higher-lying states in multiple steps. The electromagnetic interaction can be calculated with high precision including higher-order effects, which cause a difference in the Coulomb excitation cross section for different intrinsic shapes of the nucleus [3]. If the precision of the measurement is high enough, the diagonal matrix elements (and therefore the intrinsic shapes) can be extracted from the γ-ray yields originating from the various states measured as a function of the scattering angle.…”

Section: Low-energy Coulomb Excitation Of 76 Kr and 74 Krmentioning

confidence: 99%