The pulsed-field-ionization zero-kinetic-energy (PFI-ZEKE) photoelectron spectrum of jet-cooled O3 has been recorded in the range 101,000-104,000 cm(-1). The origins of the X 1A1-->X+ 2A1 and X 1A1-->A+ 2B2 transitions could be determined from the rotational structure of the bands, the photoionization selection rules, the photoionization efficiency curve, and comparison with ab initio calculati...

Rotationally resolved WV-spectra are presented for the 4 bands of benzene-Kr and benzene-Xe complexes yielding precise rotational constants and van der Waals bond lengths for the ground and excited vibronic state, and electronic band shifts. These values complement the previously published data for the other rare gases and the various quantities have now been determined for all the benzene-rare...

A 985 MeV Hf beam was Coulomb excited by a 208 Pb target at the ATLAS accelerator of Argonne National Laboratory. Gammasphere and the CHICO particle detector recorded particle-γ coincidence data. The aim was to populate and determine the mechanism of previously observed Coulomb excitation of the Kπ = 6 (t1/2 = 77 ns) ,8 (4 s) and 16 (31 y) isomer bands. New rotational bands were identified incl...

We present a photometric study of I-band variability in the young association Cepheus OB3b. The study is sensitive to periodic variability on time-scales of less than a day, to more than 20 d. After rejection of contaminating objects using V , I , R and narrow-band Hα photometry, we find 475 objects with measured rotation periods, which are very likely pre-main-sequence members of the Cep OB3b ...

We have obtained high-resolution Fourier transform emission spectra of the à left and right arrow &Xtilde; transition of the jet-cooled p-xylyl radical in the 450-nm spectral region. The band contours of several vibronic bands are examined. By using the rotational constants obtained from previous high-resolution LIF spectra and information about the torsional constants from dispersed fluorescen...

A K(pi)=13+, 280 ns four-quasiparticle isomer in the odd-odd nucleus 174Lu has been identified and characterized. The isomer decays to both K(pi)=7(+) and K(pi)=0(+) rotational bands obtained from the parallel and antiparallel coupling of the proton 7/2+[404] and neutron 7/2+[633] orbitals. K mixing caused by particle-rotation coupling explains the anomalously fast transition rates to the 7+ ba...

Neutron-rich Zr and Mo isotopes were populated as fission fragments produced by the 238Usa, fd fusionfission reaction. The level schemes of these nuclei have been extended beyond the first band crossing region, which can be ascribed to the h11/2 neutron pair alignment. The spin alignment and signature splitting for the nh11/2 orbitals in term of triaxiality is addressed. The crossing frequency ...

We have carried out multi-epoch, time-series differential I-band photometry of a large sample of objects in the south-east region of the young (∼3Myr), nearby (∼350 pc) σ Orionis open cluster. A field of ∼1000 arcmin was monitored during four nights over a period of two years. Using this dataset, we have studied the photometric variability of twenty-eight brown dwarf cluster candidates with mas...

Direct physical evidence for the linkage of a band 3 population to the cytoskeleton in the erythrocyte ghost membrane is presented. The rotational diffusion of band 3 proteins was mesured by observing flash-induced transient dichroism of a covalently bound eosin probe. After proteolytic release of a 40,000-dalton cytoplasmic segment of band 3 by trypsin, a considerable enhancement in the decay ...

This paper reports on recent experimental studies of quadrupole moments and reduced transition probabilities in atomic nuclei. First, based on the deduced B(E2) transition strength from a measurement of lifetimes, Ce is suggested as a benchmark for the X(5) critical point symmetry in the mass A ≈ 130 region. Next, a quadrupole moment measurement of the 29 2 − bandhead of a magnetic rotational b...