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Pionic Fusion of Heavy Ions

D. Horn·G. C. Ball·D. R. Bowman·W. G. Davies·D. Fox·A. Galindo-Uribarri·A. C. Hayes·G. Savard·L. Beaulieu·Y. Larochelle·C. St-Pierre
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Abstract

We report the first experimental observation of the pionic fusion of two heavy ions. The 12C(12C,24Mg)pi0 and 12C(12C,24Na)pi+ cross sections have been measured to be 208 +/- 38 and 182 +/- 84 picobarns, respectively, at E_cm = 137 MeV. This cross section for heavy-ion pion production, at an energy just 6 MeV above the absolute energy-conservation limit, constrains possible production mechanisms to incorporate the kinetic energy of the entire projectile-target system as well as the binding energy gained in fusion.

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D. Horn, G. C. Ball, D. R. Bowman, W. G. Davies, D. Fox, A. Galindo-Uribarri, A. C. Hayes, G. Savard, L. Beaulieu, Y. Larochelle, C. St-Pierre. 1996-08-13. Pionic Fusion of Heavy Ions. https://doi.org/10.1103/physrevlett.77.2408

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