Inelastic Scattering of 4-Mev Protons and Deuterons from Separated Isotopes ofDy161,Dy163,Yb171, andYb173

The inelastic scattering of protons and deuterons from the odd isotopes of Dy and Yb has been measured at energies around 4 Mev in a heavy-particle spectrometer at a scattering angle of 145°. Isotopically pure targets were prepared in an electromagnetic isotope separator. Inelastic groups corresponding to the two lowest rotational states were observed in ${\mathrm{Dy}}^{161}$ at 44 kev and 102 kev, in ${\mathrm{Dy}}^{163}$ at 74 kev and 170 kev, in ${\mathrm{Yb}}^{171}$ at 67 kev and 76 kev, and in ${\mathrm{Yb}}^{173}$ at 78 kev and 181 kev. The reduced electric quadrupole transition probabilities for these levels were determined.