The excitation spectra in the deformed nucleus 230 Th were studied by means of the (p,t) reaction, using the Q3D spectrograph facility at the Munich Tandem accelerator. The angular distributions of tritons are measured for about 200 excitations seen in the triton spectra up to 3.3 MeV. Firm 0 + assignments are made for 16 excited states by comparison of experimental angular distributions with the calculated ones using the CHUCK code. Additional assignments are possible: relatively firm for 4 states and tentative also for 4 states. Assignments up to spin 6 + are made for other states. Sequences of the states are selected which can be treated as rotational bands and as multiplets of excitations. Experimental data are compared with interacting boson model (IBM) and quasiparticlephonon model (QPM) calculations.

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The effects of retardation in the Coulomb excitation of radioactive nuclei in intermediate energy collisions (E lab ∼ 100 MeV/nucleon) are investigated. We show that the excitation cross sections of low-lying states in 11 Be, 38,40,42 S and 44,46 Ar projectiles incident on gold and lead targets are modified by as much as 20% due to these effects. The angular distributions of decaying gammarays are also appreciably modified. 25.70.De

In the light of new g factor results for the stable isotopes between 122 Te and 130 Te, the calibration and modeling of the recoil-in-vacuum (RIV) interaction for Te ions is reexamined, and the recent radioactive-beam g factor measurement on 132 Te by the RIV technique is reevaluated. The implications for further RIV g-factor measurements in the 132 Sn region are discussed.

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