Experimental study of (p, 2p) reactions at 197 MeV on ¹²C, ¹⁶O, ^40,48Ca, and ⁹⁰Zr nuclei leading to low-lying states of residual nuclei

We have measured the differential cross section and analyzing power for (p, 2p) reactions that lead to discrete states of residual nuclei at an incident energy of 197 MeV for five kinds of target nuclei, C-12, O-16, Ca-40,Ca-48, and Zr-90. The data are compared with distorted-wave impulse approximation calculations using two kinds of global optical potentials. The spectroscopic factors obtained from these calculations agree with those determined in (e, e ' p) studies within 20%, except for one orbital of the Zr-90 nucleus where the distortion effect is much greater than that for the other orbitals of Zr-90 and for other target nuclei. We also observed a clear and visibly distinct j-dependence in the analyzing power.