Pionic Fusion of Heavy Ions
Horn, D. · Ball, G. C. · Bowman, D. R. · Davies, W. G. · Fox, D. · Galindo-Uribarri, A. · Hayes, A. C. · Savard, G. · Beaulieu, L. · Larochelle, Y. · St-Pierre, C.
Original · EN
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 Ecm = 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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