The resonance enhanced ~111! photodissociation spectra of the ~8,0! and ~9,0! bands of the P7/2←S system of FeO have been recorded. From a rotational analysis, the rotational parameters for the S ground state of FeO have been obtained for the first time. The rotational constant B050.502060.0004 cm 21 is derived, giving r051.64360.001 Å. Other molecular parameters determined for the S ground sta...

Signature effects observed in rotational bands are a consequence of an inherent D2-symmetry. This symmetry is naturally broken by the mean field cranking approximation when a tilted (non-principal) axis orientation of the nuclear spin becomes stable. The possible tunneling forth and back between the two symmetry-related minima in the double-humped potential-energy surface appears as a typical b...

The rotational diffusion of concanavalin A receptors of viable Friend erythroleukemia cells and the band 3 anion transport system of human erythrocytes has been measured via the time-dependent phosphorescence emission intensity and anisotropy of triplet probes excited by a 5-ns laser pulse. High-quality phosphorescence decay curves with a 10-microseconds time resolution were obtained at concent...

The neutron deficient Tb nucleus has been studied with the Mo (Fe, αp) reaction at 240-MeV incident energy and the multidetector array GASP. For the yrast πh11/2 decoupled band, excited states up to 6.7 MeV and spin up to 47/2− have been observed. This band presents an upbend at rotational frequency of ~ω = 0.38 MeV due to the alignment of h11/2 protons. The results are discussed in terms of th...

band 1 0 . 30548 − cm was measured without skimmer, while the linewidth was 0.15 GHz with the collimating skimmer. The Doppler linewidth was decreased to about 0.2 GHz i.e., six times narower than before, by the collimation for the 1 0 . 31770 − cm band. The molecular rotational constants, the centrifugal distortion constants and the moment of inertia of the excited state were calculated. The i...

We perform shell model calculations in odd-odd nuclei using a quadrupolequadrupole interaction with single-particle splittings chosen so as to obtain the SU(3) results. Elliott had shown that such an interaction gives rotational bands for which the energies go as I(I + 1). This certainly is true for eveneven and for odd-even or even-odd nuclei with K 6= 1/2. We have looked at odd-odd nuclei e.g...