Abstract
The reaction has been studied in the laboratory energy range –0 keV. The vector analyzing powers and the angular distributions of the cross section for capture to the ground, first-, and third-excited states are reported. Additionally, the absolute cross section and (equivalently) the astrophysical factor have been measured for capture to the third-excited state. Calculations have been performed for all three transitions using the direct capture model to which the known nearby 1 resonances were added. While they predict the angular distribution observed for the cross section and analyzing power in the case of both the first and third-excited states of Be, they do not reproduce those for the ground state. These calculations predict negligible 1 strength below 80 keV for capture to the third-excited state , , 16.6 MeV), and we therefore conclude that the extrapolation of the astrophysical factor for the reaction, which has been performed previously by assuming pure 1 capture, is valid with regard to the neglect of any significant -wave capture strength.
- Received 25 March 1997
DOI:https://doi.org/10.1103/PhysRevC.56.1605
©1997 American Physical Society