2019 Impact factor 2.176
Hadrons and Nuclei

Eur. Phys. J. A 9, 479-489

The $\mathsf{^{27}Al(p,\gamma)^{28}Si}$ reaction: direct capture cross-section and resonance strengths at Ep=0.2-1.12 MeV

S. Harissopulos1 - C. Chronidou1 - K. Spyrou1 - T. Paradellis1 - C. Rolfs2 - W.H. Schulte2 - H.W. Becker2

1 Institute of Nuclear Physics, NCSR ``Demokritos'', POB 60228, GR-15310 Aghia Paraskevi, Athens, Greece
2 Institut für Physik mit Ionenstrahlen, Ruhr-Universität-Bochum, Universitätsstrasse 150, D-44780 Bochum, Germany

Received: 4 October 2000 / Revised version: 5 December 2000
Communicated by D. Schwalm

Abstract
The 27Al(p,$\gamma$)28Si reaction has been investigated using two different 4$\pi$ NaI summing detectors. The strength of 26 resonances in the energy range from 200 to 1120 keV has been measured. In addition, yield measurements have been carried out at 9 beam energies in the 490 to 1150 keV range in order to determine the direct capture cross-section. The existing data on the non-resonant mechanism were analysed and combined with the results of the present work. The resulting resonance strengths as well as the deduced direct capture astrophysical S-factor are compared with previous work.

PACS
25.40.Lw Radiative capture - 25.40.Ny Resonance reactions - 29.40.Mc Scintillation detectors - 27.30.+t $20 \leq A \leq 38$


Copyright Società Italiana di Fisica, Springer-Verlag 2000