The unbound level structure of C has been studied using the 'OB(3He, t)' C reaction. Bombarding energy was 38.2 MeV and tritons were detected in an energy-loss spectrometer. In the seven spectra taken, at lab angl. es from 2, 5' to 30', the broad 6.60 MeV prominence was well fitted by a single Lorentzian-shaped peak, while the 5.28 MeV region was well fitted by two peaks. The excitation energies of these peaks were obtained using known levels in C, populated from the B impurity in the 8 target.NUCI EAR REACTIONS~oB(He, t); E=28.2 MeV; deduced level structure in broad peaks by fitting spectra; measured E", I' of levels found.In conjunction with a study of "Be via 9Be(d, P), '

States of spin |~ in Ti 47 , Ti 49 , Cr 51 , Fe w , Fe 66 , Fe 57 , Ni 57 , Ni 69 , and Ni 61 were observed by means of the (p,d) reaction with 28-MeV incident protons. In each case the highest }~ state seen was found to be the isobaric analog of the lowest J~ state of the isobar with one more neutron. Coulomb displacement energies were obtained which are in excellent agreement with known values in this mass region. The lower J~ states were interpreted as "configuration states," that is, states associated with the same configuration as the analog, but with isospin lower by unity. The angular distributions in all cases were in good agreement with distorted-wave calculations. Comparison of the spectroscopic factors for the analog and configuration states with the predictions of ./-./-coupling sum rules revealed that the normal procedures used in distorted-wave calculations predict too large a Q dependence. However, by using radial wave functions for the picked-up neutron that are identical for all I/7/2 states in a given nucleus, reasonable agreement with the sum rules was obtained. Reasonable agreement was also found with the strengths for various states computed from I/7/2 shell-model calculations. The energy splitting between the analog state and the strength-weighted mean of the configuration states was also found to be in agreement with theoretical estimates.

No abstract

No abstract

No abstract