15N(p vector,p0)15N and the levels of 16O for Esub(x) = 14.8-18.6 MeV

Angular distributions of cross section and analyzing power for elastic scattering of protons from 15N have been measured for Esub(p)=2.7-7.0 MeV. A phase-shift analysis of the data yields spin-parity assignments and level parameters for seventeen states of 16O in the excitation energy region 14.8-18.6 MeV. Three of the resonances have not previously been identified, among them being a broad Jsup(π)=2- level at Esub(p)=6.1 MeV which is almost certainly the analog of the 2- 1p1h state with configuration (dsub(3/2), psub(1/2)-1) at Esub(x) approx.= 5.0 MeV in 16N. The broad level previously reported near Esub(p)=5.0 MeV has been observed and its parameters determined. A resonance analysis of the phase shifts yielded values of Esub(r), GAMMA and GAMMAsub(p) for all of the levels. The Jsup(π) assignments are in agreement with previously reported values. For resonances having J=l, the data can usually be fit with a resonant phase shift corresponding to either J=l+1 or l-1, in addition to the phase shift for J=l. Which of the two spurious-J solutions occurs seems to depend on whether the partial wave through which the resonant state is formed is J=l+1/2 or J=l-1/2. (orig.)