Coulomb dissociation of 11Li and 11Be in a direct fragmentation model

doi:10.1016/0375-9474(92)90208-2

Nuclear Physics A

Volume 540, Issues 1–2, April 1992, Pages 341-352

https://doi.org/10.1016/0375-9474(92)90208-2 Get rights and content

Abstract

The Coulomb dissociation contribution to the two-neutron and one-neutron removal cross section of, respectively, ¹¹Li and ¹¹Be projectiles has been calculated in a direct fragmentation model. The model is formulated within the framework of the post form distorted-wave Born approximation. In this theory, the “post acceleration effect” of the ⁹Li and ¹⁰Be fragments in the final channel is accounted for properly. The Coulomb break-up can explain aprroximately upto 80% of the experimental 2n removal cross section of ¹¹Li for the ¹⁹⁷Au target at the incident energy of 29 MeV/A. The beam energy dependence of the calculated cross sections is in good agreement with the few experimental points presently available. The angular distributions of the ⁹Li as well as of 2n system are found to be concentrated in the very forward angles.

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^☆: The final version of this paper was prepared while one of the authors (RS) was visiting Institut für Theoretische Physik, Universität Giessen during summer of 1991.

¹: Present address: Institut für Theoretische physik, Universität Giessen, Germany.

²: He would like to express his sincere thanks to Ulrich Mosel for his very kind hospitality. Useful discussions with George Bertsch, Wolfgang Cassing and Ulrich Mosel is gratefully acknowledged.

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Coulomb dissociation of 11Li and 11Be in a direct fragmentation model☆

Abstract

Phys. Lett.

Phys. Rev. Lett.

Phys. Lett.

Phys. Lett.

Nucl. Phys.

Progr. Theo. Phys.

Phys. Rev. Lett.

Phys. Lett.

Phys. Rev.

Phys. Rev.

Argonne National Laboratory Preprint No. Phys-6720-TH

Nucl. Phys.

Z. Phys.

GSI Report, GSI-91-19

Coulomb dissociation of ¹¹Li and ¹¹Be in a direct fragmentation model☆