DREB2014 - Direct Reactions with Exotic Beams

Spectroscopic factors (SF) are fundamental quantities in nuclear physics. They have been extensively used in understanding the single particle properties of nuclear structures. In this talk, I will discuss the spectroscopic information extracted for the 4 hole-states (f7/2, p3/2, s1/2 and d3/2) of 45Ar, 47Ca, 49Ti, 51Cr, 53Fe and 55Ni, all with N=27. The H(46Ar,d)45Ar and H(56Ni,d)55Ni reactions were studied in inverse kinematics at the Coupled Cyclotron Facility at Michigan State University with the high resolution silicon array HiRA and the S800 spectrometer. Spectroscopic information of the other nuclei were extracted from the published experiments using normal kinematics of (p,d) transfer reactions. The compiled data shows the evolution of the single-particle states from stability to instability regions. Of especial interest are the deep hole-states of s1/2 and d3/2 below the Fermi Energy. Successful description of these states must include nucleonic orbits in both the sd and pf shells. Thus the present set of data provides a benchmark for large basis calculations that require effective interactions between the sd and pf orbits. Results from using different state-of-the art models to reproduce the excitation energies and spectroscopic factors will be presented.