Neutrino interactions with carbon

The KARMEN experiment at the pulsed spallation neutron facility ISIS studies the charged and neutral current reactions 12C (νe,e-) 12N and 12C (ν,ν') in the astrophysical important energy range up to 50MeV. Neutrinos are detected by a 56ton high resolution liquid scintillation calorimeter with spectroscopic quality. Efficient background rejection results in clear neutrino signatures and allows reliable cross section measurements down to 10-42cm2. We present cross section results for ν-induced reactions on carbon with special emphasis on their implications for neutrino astrophysics and weak nuclear formfactors and report a new flux-independent test of the equality of the couplings of νe and anti νμ, to the weak neutral current at low energies. ((orig.))