Phase-Shift Analysis of Proton Scattering by Nitrogen

A phase-shift analysis has been made of a set of angular distributions for the elastic scattering of protons by nitrogen in the energy range 1.0 Mev to 3.0 Mev. Two independent $S$-wave phase shifts and one $P$-wave phase shift of hard-sphere type have been assumed. Moderately good agreement with the nonresonant scattering below 2.3 Mev and with the scattering at the ½+ resonance at 1.557 Mev has been obtained, indicating that the gross features of the scattering can be represented in this way. Between 2.3 Mev and 3.0 Mev the fits are poor. The results indicate a broad ½+ resonance at 2.32 Mev with a width of 0.55 Mev.