A Measurement of the Cross Section for the ^8Li(n,γ)^9Li Reaction at Astrophysical Energies by Reverse Kinematics.

Details A Measurement of the Cross Section for the ^8Li(n,γ)^9Li Reaction at Astrophysical Energies by Reverse Kinematics. A Measurement of the Cross Section for the ^8Li(n,γ)^9Li Reaction at Astrophysical Energies by Reverse Kinematics.

Oct 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996aps..dnp..cd03z&link_type=abstract

American Physical Society, Division of Nuclear Physics Meeting, October 2-5, 1996, abstract #CD.03

Physics

Nuclear Physics

Scientific paper

We have made the first attempt to determine the cross section of the ^8Li(n,γ)^9Li reaction at astrophysical energies. This reaction competes with the ^8Li(α,n)^11B reaction in the inhomogeneous big bang model, and its reaction rate may affect the primordial abundance of ^7Li and heavier nuclei. Using a radioactive beam of ^9Li and the coulomb dissociation method it is possible to measure the cross section of the inverse reaction ^9Li(γ,n)^8Li. The cross section of interest, ^8Li(n,γ)^9Li, can then be determined with the detailed balance theorem. With a one-neutron binding energy of 4 MeV for ^9Li, nuclear dissociation into n+^8Li competes strongly with coulomb dissociation. Therefore, in an attempt to separate the nuclear from the coulomb contribution we measured the cross-section for 6 different targets with Z ranging from 6 to 92.

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