A long core flow-rig operating at reservoir pressure and temperature has been constructed for basic studies of multiphase flow in porous media. The dynamics of the fluid saturation distributions are recorded by labelling the fluid phases by nuclear tracers and detecting the gamma radiation by a movable germanium detector. Computerized automation include data acquisition and process control. Testing of the instrumentation and preliminary flow experiments indicate that the apparatus fulfills the objective of imaging the displacement processes at reservoir conditions.

The level structure of 143Nd up to Ex = 3.8 MeV has been investigated in the (3He, α) reaction with a 24 MeV 3He beam. The measured angular distributions have been analyzed with standard DWBA calculations and spectroscopic factors are deduced. Two groups of levels appear to be populated with l = 5 transfers and are tentatively identified as fragments of the 1h112−1 state. The observed strength accounts for ∼50% of the sum rule limit of 2j + 1.

The level structure of 119Te has been investigated up to an excitation energy of ≈ 1.2 MeV by the (d,t) reaction and up to ≈ 2.3 MeV by the (τ, α) reaction using beams of 17 MeV deuterons and 24 MeV τ-particles. Angular distributions were recorded and analyzed with standard DWBA calculations. Spectroscopic factors were deduced. Anomalous angular distributions and cross sections of some low-lying and weakly excited states were explained using CCBA calculations. A previously known isomeric 112− state has been found to have an excitation energy of 262 keV.

The level structure of 127Te up to an exitation energy of 2.5 MeV has been investigated with the (d,t) and (τ,α) reactions with beams of 17 MeV deuterons and 24 MeV τ-particles. Angular distributions were recorded and analyzed with standard DWBA calculations. Spectroscopic factors were deduced. Anomalous angular distributions and cross sections of some low-lying and weakly excited states are explained using CCBA calculations.

The level structure of 127Te up to an exitation energy of 2.5 MeV has been investigated with the (d,t) and (τ,α) reactions with beams of 17 MeV deuterons and 24 MeV τ-particles. Angular distributions were recorded and analyzed with standard DWBA calculations. Spectroscopic factors were deduced. Anomalous angular distributions and cross sections of some low-lying and weakly excited states are explained using CCBA calculations.

High-spin states have been located in 153Sm by means of the (α, 3He) reaction with 40 MeV α-particles. The scattered particles were momentum-analysed in a QMG2 magnetic spectrometer and recorded in a position-sensitive detector. Several high-spin states were observed below 2 MeV of excitation. Strongly populated levels at 698, 1118 and 1708 keV can most likely be interpreted as 132+ states. The deduced nuclear structure factors and the energy location of these levels are compared with the neighbouring isotope 151Sm and with a particle-rotor-model calculation of the i132 spectra.

The level structure of 125Te up to an excitation energy of ∼ 2.2 MeV has been investigated by the (d, t) and (3He, α) reactions with beams of 17 MeV deuterons and 24 MeV 3He particles. Angular distributions were recorded and analyzed with standard DWBA calculations. Spectroscopic factors were deduced. Anomalous angular distributions and cross sections of some low-lying and weakly excited positive parity states are explained using CCBA calculations. A new level, probably ½+, is observed at 538 keV.

The 146Nd(d, t)145Nd reaction has been studied with 16 MeV deuterons with a vector polarization of ~0.75 from the McMaster University tandem Van de Graaff accelerator. Measurements were made at 13 angles from 5 to 45° using a magnetic spectrograph equipped with photographic emulsions in the focal plane. The measured analyzing powers for strongly populated levels are well described with standard distorted wave Born approximation calculations and made it possible to confirm previous spin assignments as well as give unambiguous assignments for some states for which the spin information was previously conflicting, incomplete, or lacking.

The 150Nd(d,t)149Nd reaction has been studied with 16 MeV deuterons with a vector polarization of ~0.75 from the McMaster University tandem Van de Graaff accelerator. Measurements were made at 11 angles from 5.5 to 37.5° using a magnetic spectrograph equipped with photographic emulsions in the focal plane. The measured analyzing powers which are well described with standard distorted wave Born approximation calculations, made it possible to give unambiguous assignments for 14 states for which spin information was previously conflicting, incomplete, or lacking.

High-spin states have been located in 151Sm by means of the (α, 3He) reaction with 40 MeV α-particles. The scattered particles were momentum analyzed in a QMG/2 magnetic spectrometer and recorded in a position sensitive detector. Several high-spin states were observed in the energy range below 1.7 MeV excitation. The previously unknown strongly populated levels at 867 and 1480 keV can most likely be interpreted as 132+ states. Both the deduced nuclear structure factors and the energy location of these levels are in excellent agreement with a simple Coriolis coupling calculation.

The 144Sm(α, 3He)145Sm stripping reaction has been studied up to 3 MeV excitation energy with a 40 MeV α-beam. Angular distributions have been recorded, and spectroscopic factors are deduced using a standard DWBA procedure. The reaction favours high-l transfers, and is found to be very useful for the investigation of large-j states. From a comparison with the spectroscopic factors known from the 144Sm(d, p)145Sm reaction the normalization factor for the (α, 3He) reaction is found to depend strongly on the optical model parameters and on the transferred angular momentum l.

The level structures of the 145, 147, 149Nd nuclei up to about 5 MeV excitation energy have been investigated with the (3He, α) reaction at 24 MeV. Additional 17 MeV (d, t) data have been obtained for 147, 149Nd. The angular distributions have been analyzed with standard DWBA calculations, and spectroscopic factors have been deduced. Two groups of states carrying h112 single-particle strength may be associated with the 92− [514] and 112− [505] Nilsson orbitals. A considerable amount of high-l single-particle strength may be found in the continuum observed in the (3He, α) spectra above 3 MeV in all the nuclei.

Low-lying negative-parity high-spin states in 125Te associated with the unique-parity orbit 1h112, are studied with the reactions (d, t) and (3He, α) at beam energies of 17 MeV and 24 MeV respectively. Four new levels are identified. Full angular distributions are presented. The data can only be understood if two-step processes via the quadrupole excitation mode are included. A rather satisfactory description of the data was obtained by combining CCBA with the dressed 3-quasiparticle model for nuclear structure.