DOUBLY COHERENT PRODUCTION OF PI- BY HE-3 IONS OF 910 MEV

The inclusive pion spectrum from the reaction He3+Li6→π-+X at 910 MeV was measured at 0°with moderate resolution up to the kinematic limit of the two-body final-state reaction. A first analysis shows that the production of high-energy pions cannot be explained by the NN→NNπ process using conventional nucleon momentum distributions. At the end of the spectrum a clear deviation from the general falloff slope is observed and attributed to the doubly coherent reaction He3+Li6→C9+π-. © 1979 The American Physical Society.