Abstract
The excitation energies of the levels in 30Si have been measured up to an excitation of 9.46 MeV with the 28Si(t, p) 30Si reaction at a triton energy of 6.0 MeV. Angular distributions have been measured of proton groups from the 28Si(t, p) 30Si and 29Si(d, p) 30Si reactions in a multi-angle magnetic spectrograph. Triton bombarding energies of 10.5 and 12.1 MeV were used and the deuteron incident energy was 10.0 MeV. States in 30Si up to an excitation of 8 MeV were observed. Spins and parities of several states have been assigned using an empirical method for the (t, p) results and using a DWBA analysis for the (d, p) distributions. Spectroscopic factors for twelve states were obtained from the latter analysis. Two of these disagree with theoretical predictions. The state previously reported at an excitation of 6.63 MeV in 30Si was observed to be formed by a strong L = 0 transition in the (t, p) reaction and also by a strong l = 1 transition in the (d, p) reaction. We deduce that there are two closely spaced states at about this excitation, one having a spin and parity of 0 + and the other 0 −, 1 − or 2 −.
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