Abstract
The α-α scattering to the 8Be ground state was investigated in kinematic coincidence for the angle pairs 45‡/45‡ and 30‡/60‡ using the crossing beams technique, with an energy resolution of 26 eV. The nuclear resonance is split into 2 structures, not the 3 structures suggested by earlier work. The atomic physics origin of the splitting, the resonance parameters of the 8Be ground state, and astrophysical implications are discussed.
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In this work all quantities are in the laboratory system, except where quoted differently
Supported in part by Deutsche Forschungsgemeinschaft (Ro429/ 21-2), US Department of Energy, Office of High Energy and Nuclear Physics (Grant no. DE-FG05-88ER40441), NATO Scientific Affairs Division (Grant no. 86-0485), and Friedrich Flick Förderungsstiftung
The authors would like to thank W. Dierska for his dedication in building various crucial components of the experimental apparatus and H. Baumeister, W. Verhöven and H.W. Ortjohann for advise in technical questions. The loan of several vacuum pumps by D. Grzonka and H. Dombroswki is highly appreciated.
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Wüstenbecker, S., Becker, H.W., Ebbing, H. et al. Atomic effects on α-α scattering to the 8Be ground state. Z. Physik A - Hadrons and Nuclei 344, 205–217 (1992). https://doi.org/10.1007/BF01291705
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DOI: https://doi.org/10.1007/BF01291705