Abstract
The bare nucleus astrophysical factor has been measured for the first time at energies from about 100 keV down to about 5 keV by means of the Trojan Horse method (THM). In this energy region, the factor is strongly dominated by the 8.699 MeV level (), producing an -wave resonance centered at about 10 keV in the entrance channel. Up to now, only the high–energy tail of this resonance has been measured, while the low-energy trend is extrapolated from the available direct data. The THM has been applied to the quasifree )n reaction induced at a boron-beam energy of 24.5 MeV. An accurate analysis leads to the determination of the factor and of the corresponding electron screening potential , thus giving for the first time an independent evaluation of it.
10 More- Received 8 November 2013
- Revised 23 May 2014
DOI:https://doi.org/10.1103/PhysRevC.90.035801
©2014 American Physical Society