Luni-solar Variations in the Ionosphere

Abstract

Neutron-gamma-ray coincidence measurements have been made in the reaction 19F(d,ny),oNe at bombarding energies between 500 and 700 keV. Time offlight determination of neutron energy indicates a new energy level in .oNe at lO· 31 ±O' 07 MeV. From angular distributions of the neutrons, and observation of the gamma· decay spectrum of the MeV state, spin and parity of 1 + are inferred for this state.