Large Deformation Effects in the N = Z 44Ti Compound Nucleus
P. Papka, C. Beck, F. Haas, V. Rauch, M. Rousseau, P. Bednarczyk, S. Courtin, O. Dorvaux, K. Eddahbi, K. Kezzar, I. Piqueras, J. Robin, A. Sanchez i Zafra, S. Thummerer, N. Redon, B. Rosse, O. Stezowski, A. Prevost, A. Hachem, E. Martin, A.H. Wuosmaa
Abstract
The N = Z 44Ti* nucleus has been populated in Fusion Evaporation process at very high excitation energies and angular momenta using two entrance channels with different mass-asymmetry. The deformation effects in the rapidly rotating nuclei have been investigated through the energy distribution of the alpha-particle combined to statistical-model calculations. In the case of low-multiplicity events, the ratio between first particle emitted has been measured and shows significant disagreement with the predictions of the statistical-model. This may explain The large discrepancies observed in proton energy spectra measured in previous experiments performed in the same mass region.