On the Virtual Excited State of theBe9Nucleus

An attempt has been made, on the basis of a simple model, to understand the energy and width of the virtual level of the ${\mathrm{Be}}^9$ nucleus, which was found by Davis and Hafner by inelastic scattering of protons from ${\mathrm{Be}}^9$. The model used for the ${\mathrm{Be}}^9$ nucleus was that of a neutron moving in a potential well provided by the remainder of the nucleus. There is no striking agreement numerically between the model and experiment, but a loose interpretation by means of the model is possible.