Shell model and collective high spin states in nuclei: 45,47Ti, 47,49V and 51Mn

摘要: Abstract Several new levels, in particular with high angular momentum, were observed the odd- A nuclei of 1 f 7 2 shell 45,47 Ti, 47,49 V and 51 Mn. reactions mainly induced by heavy ions studied: 40 Ca( 14 N, 2pn) Mn, 50 Cr( 3 He, pn) 35 Cl( 16 O, αpn) 45 27 Al( 24 Mg, 44 Li,p3n) 47 Mg( 32 s, α3p) 49 V, 12 C, 3p) S, 2αp) bombarding energies from Coulomb barrier value up to maximum corresponding ≈ 9.5 MV Tandem voltage. Standard techniques in-beam γ-ray spectroscopy adopted: excitation functions, distributions γ-γ coincidences. Methods spin assignment are discussed. The following levels (energies keV) or confirmed (labelled c): Mn : 1139, 9 − c ; 1488, 11 2957, 13 3250, 15 3679, 17 4138, 19 5637, 21 , 6468, 23 7172, ( ) Ti 2656, ); 3016, 3601, ), 5421, 6164, 7145, ). 4498, . V: 2615, 4143, 5907, 3324, 3741, nature these seems complex. Many states understood frame pure (1f n model. But several discrepancies its predictions, particularly for low states, require a larger configuration space and/or introduction collective