Abstract
The angular distributions of rays from the reaction have been measured at 20 energy points in the energy range to 2.8 MeV. The sensitivity of the present experiment compared to previous direct investigations was raised by 1–2 orders of magnitude, by using an array of highly efficient ( ) Ge detectors shielded actively with BGOs, as well as high beam currents of up to that were provided by the Stuttgart Dynamitron accelerator. The and factors deduced from the angular distributions have been extrapolated to the range of helium burning temperatures applying the -matrix method, which yielded and .
- Received 13 December 2000
DOI:https://doi.org/10.1103/PhysRevLett.86.3244
©2001 American Physical Society