Study of the particle unstable S-nucleus resonances 5Lisup(3/2-) and 5Hesup(3/2-) in the reaction α+d->α+p+n at the c.m. energy Esub(CMS)=9.3 MeV

The α-particle induced Deuterium break-up was measured at a center of mass energy of 9.3 MeV in kinematically complete experiments. For the purpose of testing the dependence on charge caused effects (n, α)- and (p, α)-data of coincidence were taken simultaneously. The particle instable 5 nucleon systems 5Hesup(3/2-) and 5Lisup(3/2-), which occur for a short time as intermediate resonances in their ground states, were counted in an angular correlation experiment. For the detection of α-particles emitted in the decay of the intermediate resonances a broad ranged but not local sensitive Si(Li)-detector was used, built up by the Schlumberger Company. The immediate produced protons in α+d -> 5Hesup(*)+p were registered in normal sized Si(Li)-detectors made by KEVEX, the neutrons from α+d -> 5Lisup(*)+n were measured with NE213 filled scintillation counters manufactures by Nuclear Enterprises. From the cross sections in the recoil center of mass system the four tensor polarizations for rank 2 were extracted and compared with the resonating group model of Hackenbroich et al. with respect to the different charged channels. The predictions for the energy (Tsub(p) or Tsub(n)) dependent cross section in the three particle break-up calculated by Koike using Faddeev theory and Hackenbroich using resonating group method are shown in comparison with the experimental results. Discrepancies are found especially in the 5He +p-channel and their increasing with the center of mass angle (THETAsub(CMC) approx.= 1300). By means of the angular-correlation function W(THETA, phi) a more strong coupling of the 5Lisup(*)+n-channel to the reaction plane compared with the 5Hesup(*)+p-channel was found at the same production angle (THETAsub(CMS) approx.= 990). The features of Coulomb interaction are seen to be approximated too crude in both theoretical models. (orig.)