States of 137 Xe and 135 Xe have been investigated via the m Xe (d,p) and 136 Xe(d,t) reactions with 13-MeV Incident deuterons and an over-all energy resolution of 45 keV. Q values of 1.637db0.020 and -1.723±0.020 MeV have been obtained for the respective ground state 136 Xe (d,p) 137 Xe and m Xe(d,t) m Xe reactions. The angular distribution data have been analyzed using finite-range distorted-wave Born-approximation (DWBA) calculations corrected for nonlocality of the optical potential to extract spectroscopic information. Spin and parity assignments, excitation energies, and spectroscopic factors for most of the observed levels are presented. A m Xe(d,p) excitation function showed no significant evidence for an anomaly in the (d,po) cross section near the threshold of the (d,n) reaction to the corresponding isobaric analog state.

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tors for large values of angular momentum and energies close to the Coulomb barrier are strongly dependent upon the radius chosen for the nuclear surface. This dependence is reflected in our analysis and is quite pronounced for the g Q/2 state, although we do not factorize the partial width into a reduced width and a penetration factor. Similarly, the spectroscopic factors also depend weakly upon the strength of V v For the five states in 209 pb that we studied, this dependence is well described by Moore for discussions. The computer codes used were obtained by putting together codes written by T. Tamura and F. G. Perey.Uncertainties in the extracted spectroscopic factors arising from the above-mentioned dependences are much larger than those due to other optical model parameters.In conclusion, we note that the above method for extracting spectroscopic factors of the parent analog states appears very promising since the results do not depend strongly on the choice of optical-model parameters. This method can easily be modified to analyze the inelastic proton scattering through the isobaric analog resonances. It is simple to use and one retains the advantages offered by the Breit-Wigner single level formula. A method similar in spirit to the one presented has recently been reported. 9 Similar calculations are in progress for a number of other nuclei.It is a pleasure to acknowledge helpful discussions with H.A search for 3 He excited states in the reaction 3 He ip,p') 3 He* with proton bombarding energy of 30.9 MeV has been made. No inelastic peaks were observed.Since the discovery of 4 He excited states, the A = 3 nuclear system remains the only isobaric sequence in which no excited states are known to exist. In principle, knowledge of excited states in the mass-three system could directly enrich our understanding of nuclear forces. For this reason, a report by Kim et al. 1 of the observation of 3 He excited states prompted us and several other groups to re-examine the 3 He nucleus.Kim et al. 1 observed peaks in the spectrum of protons inelastically scattered from 3 He at 30.2-MeV bombarding energy. The peaks, which were observed at two laboratory angles, were interpreted as indications of 3 He states (r ^0.9 MeV) at approximately 10.2-and 12.6-MeV excitation. They reported laboratory cross sections of 2.0 and ~0.6 mb/sr, respectively, 1449

Angular correlations in the reaction plane for the 16.62-and 16.92-MeV, / ,r =2 + states in Be 8 have been measured for the reaction Li 6 (Li 6 ,ai)Be 8 * -»2a at a bombarding energy of 5.5 MeV with ai detected at 15° in the lab. The correlations for the two states are identical to a multiplicative factor at all decay alpha angles. Another alpha-alpha coincidence run at 5.0-MeV bombarding energy was performed to measure the ratio of intensities of these two states. The same data show a peak which may represent a 19.9-MeV Be 8 state with a width of 1.3 MeV. In addition, measurements of the ratio of the differential cross sections of the 16.62-and 16.92-MeV levels over a range of bombarding energies from 4.3 to 5.5 MeV indicate that the relative intensity of the 16.62-MeV level to that of the 16.92-MeV level is a constant equal to 1.22±0.08. These results favor a description of these states as strongly mixed in isobaric spin.

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