Microscopic proton two-particle neutron two-hole shell-model calculations have been performed for the nucleus $_{52}^{132}\mathrm{Te}_{80}$. Evidence results for the existence of a weak-coupling pattern obtained by coupling nuclear low-lying levels in $_{52}^{134}\mathrm{Te}_{82}$ and $_{50}^{130}\mathrm{Sn}_{80}$. Electromagnetic properties for the most important low-lying levels in $_{52}^{132}\mathrm{Te}_{80}$ are also calculated and compared with existing experimental data. The limitations of proton two-particle- (neutron two-hole-) core coupling calculations are also exhibited when proton and/or neutron number only deviates from closed shell configurations by a small (\ifmmode\pm\else\textpm\fi{}2) number.NUCLEAR STRUCTURE $_{52}^{132}\mathrm{Te}_{80}$ shell-model 2p - 2h calculations, electromagnetic properties, ${T}_{\frac{1}{2}}$, comparison with 2p (2h)-core coupling macroscopic calculations.

The $\ensuremath{\gamma}$ spectroscopy of $^{67}\mathrm{Zn}$ levels has been investigated via the $^{64}\mathrm{Ni}(\ensuremath{\alpha},n\ensuremath{\gamma})^{67}\mathrm{Zn}$ reaction at 8.2 MeV. Further information concerning low-spin states situated between 1 and 2.5 MeV has been obtained from $\ensuremath{\gamma}\ensuremath{-}\ensuremath{\gamma}$ coincidence, $\ensuremath{\gamma}$ angular distribution, and Doppler shift attenuation measurements. The results are compared with available theoretical calculations.NUCLEAR REACTIONS $^{64}\mathrm{Ni}(\ensuremath{\alpha},n\ensuremath{\gamma})$, ${E}_{\ensuremath{\alpha}}=8.2$ MeV; enriched target, measured ${E}_{\ensuremath{\gamma}}$, ${I}_{\ensuremath{\gamma}}$, $\ensuremath{\gamma}\ensuremath{\gamma}$ coin, ${I}_{\ensuremath{\gamma}}(\ensuremath{\theta})$, $\ensuremath{\Delta}{E}_{\ensuremath{\gamma}}(\ensuremath{\tau})$; $^{67}\mathrm{Zn}$ deduced level, $J$, $\ensuremath{\delta}$, $\ensuremath{\tau}$.

The levels of $^{65}\mathrm{Zn}$ have been investigated via the $^{65}\mathrm{Cu}(p, n\ensuremath{\gamma})^{65}\mathrm{Zn}$ reaction up to 1.5 MeV and the $^{62}\mathrm{Ni}(\ensuremath{\alpha}, n\ensuremath{\gamma})^{65}\mathrm{Zn}$ reaction up to 1.1 MeV excitation. The previously reported levels have been confirmed and several new transitions are proposed. The lifetimes of 10 levels in $^{65}\mathrm{Zn}$ have been measured by the Doppler shift attenuation method. The experimental reduced transition probabilities are compared with theoretical calculations performed in the frame of the weak coupling model.NUCLEAR REACTIONS $^{65}\mathrm{Cu}(p, n\ensuremath{\gamma})$, ${E}_{p}=3.4\ensuremath{-}4.0$ MeV; $^{62}\mathrm{Ni}(\ensuremath{\alpha}, n\ensuremath{\gamma})$, ${E}_{\ensuremath{\alpha}}=8.2$ MeV, enriched targets, measured ${E}_{\ensuremath{\gamma}}$, ${I}_{\ensuremath{\gamma}}$, $\ensuremath{\Delta}{E}_{\ensuremath{\gamma}}(\ensuremath{\tau})$, confirmed $^{65}\mathrm{Zn}$ levels, deduced $\ensuremath{\tau}$.

Les durees de vie des six premiers niveaux excites du 93Mo ont ete mesurees en utilisant l'effet Doppler associe a la reaction 93Nb(p, nγ)93Mo. Deux nouvelles durees de vie ont ete obtenues et la precision des quatre autres a ete amelioree.

The levels of $^{64}\mathrm{Zn}$ have been investigated via the $^{61}\mathrm{Ni}(\ensuremath{\alpha},n\ensuremath{\gamma})^{64}\mathrm{Zn}$ reaction up to 3.4 MeV excitation. The level scheme which has been obtained includes most of the previously reported levels. The lifetimes of 18 levels in $^{64}\mathrm{Zn}$ have been measured by the Doppler shift attenuation method at bombardment energies between 6.4 and 8.0 MeV.NUCLEAR REACTIONS $^{61}\mathrm{Ni}(\ensuremath{\alpha},n\ensuremath{\gamma})$, ${E}_{\ensuremath{\alpha}}=6.4\ensuremath{-}8.0$ MeV, enriched targets, measured ${E}_{\ensuremath{\gamma}}$, ${I}_{\ensuremath{\gamma}}$, $\ensuremath{\Delta}{E}_{\ensuremath{\gamma}}(\ensuremath{\tau})$ confirmed $^{64}\mathrm{Zn}$ levels, deduced $\ensuremath{\tau}$.

The thermal neutron induced (n, α) reaction cross section of 238U was measured using the highly pure thermal neutron beam from the 87 m curved neutron guide at the High Flux Reactor of the ILL (Grenoble). The energy spectrum showed an α-particle line with Eα = 9.05±0.06 MeV and σ(n, α) = 1.3±0.6 μb. The α-particle energy was used to calculate the 235Th mass of 235.04700±0.00008 amu, the Qα value of 9.20±0.06 MeV for the 238U(n, α)235Th reaction and the Qβ value of 1.44±0.08 MeV for the β-decay of 235Th. The cross-section data are compared with the results obtained with the statistical model calculation.

The levels of /sup 64/Zn have been investigated via the /sup 61/Ni(..cap alpha.., n..gamma..)/sup 64/Zn reaction up to 3.4 MeV excitation. The level scheme which has been obtained includes %most of the previously reported levels. The lifetimes of 18 levels in /sup 64/Zn have been measured by the Doppler shift attenuation method at bombardment energies between 6.4 and 8.0 MeV. (AIP)

The radiative decays of 4.7 d119mTe and 16 h119gTe have been re-investigated. Compared to previous investigations, almost twice more transitions have been observed. Revised decay schemes are proposed in which most of the observed transitions are attributed. The half lives of the levels at 270.45 keV (g 7/2), 644.01 keV (s 1/2), 1212.69 keV (9/2+) and 1366.15 keV (h 11/2) have been measured by means of the delayed coincidence method and found to be 35±10ps, <10ps, <10 ps and 112±15 ps respectively. The states are discussed in the framework of current models.

The lifetimes of a number of levels in 93Mo have been measured with the Doppler shift attenuation method (DSAM) using the 93Nb(p, nγ)93Mo reaction and observing the γ-rays emitted by the 93Mo nuclei recoiling in the self-supporting 93Nb target. The lifetimes are: 115−45+60 fs, 1362.95keV; 340−130+180 fs, 1477.15keV; 38−13+20 fs, 1492.30 fs; > 280 fs, 1520.28 keV; 95−25+50 fs, 1694.50 keV; 205−65+100 fs, 2141.10 keV; > 390 fs, 2246.80 keV; > 290 fs, 2303.90 keV; > 500 fs, 2355.25 keV; > 900 fs, 2409.00 keV; 160−55+90 fs, 2430.90 keV; > 440 fs, 2440.20 keV; 87−30+50 fs, 2479.00 keV; 130−35+60 fs, 2535.20 keV. The results are compared to previous experimental or theoretical investigations.

The (n, α) reaction has been studied using the highly pure thermal neutron beam from the 87m curved neutron guide at the Grenoble high flux reactor. The 147Sm(n, α)144Nd reaction showed up five lines corresponding to the ground and the first four excited states of the final nucleus. It is shown that ≈53 % of the 581 μb (n, α) cross section comes from the neutron capture by a bound level of the 148Sm compound nucleus. The 8.7 ± 3 μb cross section of 151Eu(n, α)148Pm seems to consist principally of at least two lines corresponding to the ground and the second excited states of 148Pm. The 153Eu(n, α)149Pm cross section for thermal neutrons is ≦ 1 μb. The lower limits of (n, α) thermal neutron cross section values on ytterbium isotopes are ≈ 20 to 40 times lower than the published data.