Proton vs. neutron halo breakup

Abstract

In this paper we show how effective parameters such as effective binding energies can be defined for a proton in the combined nuclear-Coulomb potential, including also the target potential, in the case in which the proton is bound in a nucleus which is partner of a nuclear reaction. Using such effective parameters the proton behaves similarly to a neutron. In this way some unexpected results obtained from dynamical calculations for reactions initiated by very weakly bound proton halo nuclei can be interpreted. Namely the fact that stripping dominates the nuclear breakup cross section which in turn dominates over the Coulomb breakup even when the target is heavy at medium to high incident energies. Our interpretation helps also clarifying why the existence and characteristics of a proton halo extracted from different types of data have sometimes appeared contradictory.

7 Latex pages, 3 table, 3 ps figures, to appear in Phys. Rev. C

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• A Measurement of the Coulomb Dissociation of 8B at 254 MeV/nucleon and the 8B Solar Neutrino Flux
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Cited by in corpus (8)

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• Coulomb breakup effects on the optical potentials of weakly bound nuclei
• All orders proton breakup from exotic nuclei
• The interplay of nuclear and Coulomb effects in proton breakup from exotic nuclei
• Current Status of Nuclear Physics Research
• Deformation, halo, and bubble structure: A paradigm shift of exotic phenomena in light to medium mass nuclei
• Status of art of reaction models for projectiles far from stability
• David Brink: A long-standing teacher