Final state three-body Coulomb effects in the ^208Pb(^8 B,^7Be p)^208Pb Coulomb breakup reaction

Details Final state three-body Coulomb effects in the ^208Pb(^8 B,^7Be p)^208Pb Coulomb breakup reaction Final state three-body Coulomb effects in the ^208Pb(^8 B,^7Be p)^208Pb Coulomb breakup reaction

Oct 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aps..dnp.cf007m&link_type=abstract

American Physical Society, 2002 Fall Meeting of the Division of Nuclear , abstract #CF.007

Astronomy and Astrophysics

Astrophysics

Scientific paper

The Coulomb breakup has been suggested as an indirect method to obtain information about radiative capture cross sections at astrophysically relevant energies. In particular, the dissociation of ^8B in the Coulomb field of heavy targets like ^208 Pb, is supposed to provide the information about the low-energy astrophysical factor for the ^7Be(p,γ)^8B radiative capture. The importance of the astrophysical information determined from the Coulomb dissociation and the future application of this indirect method to determine the astrophysical capture rates for 2s 1d-shell nuclei near proton drip line dictates the necessity of thoroughful investigations of the post-decay Coulomb acceleration (PCA) which can affect the accuracy of the indirect Coulomb dissociation method. In this paper we present the first genuine quantum-mechanical calculations of the three-body final-state Coulomb interaction which allows us to estimate the PCA in the breakup reactions. We present the PCA effect for the ^208Pb(^8 B,^7Be p)^208Pb double and single differential cross sections for experiments in RIKEN [1] and MSU kinematics [2]. We find that the effect depends on the scattering angle and relative kinetic energy of the fragments. [1] T. Motobayashi et al., Phys. Rev. Lett. 73, 2680 (1994). [2] Davids B. et al., Phys. Rev. C 63, 065806 (2001).

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