The isotone shift of the 2p3/2 neutron orbit radius for N=29

The reactions 50Ti(t,d)51Ti and 54Fe(t, d)55Fe have been studied in the sub-Coulomb regime at triton energies in the range from 2.25 to 3.50 MeV. Values of the RMS radius of the 2p 3/2neutron orbit in the ground states of the final nuclei were determined from a DWBA analysis of the measured absolute cross sections. In the DWBA analysis of the (t,d) data the spectroscopic factors which were used were those which resulted from a sum-rule analysis involving published neutron stripping and pick-up data. The results of the present experiments when taken with the results of similar experiments on targets of 48Ca and 52Cr establish the variation of 2p3/2 neutron orbit size within the isotonic sequence of N=29 ground states.