Z. Naturforsch. 41 a, 1302-1306 (1986); received August 7, 1986 The microwave ground state spectra of tert.-butyl isocyanide, (CH3)3CNC, and phenyl isocyanide, C6H 5NC, have been measured by microwave Fourier transform spectroscopy in the region 5.0 to 8.0 GHz and analysed for nuclear quadrupole hyperfine splitting due to ‘*N. The nuclear quadrupole coupling constants are shown to be in accorda...

Quadrupole moment of the hydrogen atom in a magnetic field B = 0– 4.414×10 G is calculated by two different methods. The first method is variational based on a single trial function. The second method deals with a solution of the Schrödinger equation in a form of a linear combination of the Landau orbitals. [email protected] 2 On leave of absence from the Institute for Theoretical and E...

We obtain the electronic quadrupole and hexadecapole moments of the Ni II ground state to be -0.493 au and 0.204 au using relativistic configuration interaction methodology. These results are in good agreement with available experimental results. Apparently this is the first time an electronic hexadecapole moment has been calculated for an atom.

Motivated by WMAP’s confirmation of an anomalously low value of the quadrupole moment of the CMB temperature fluctuations, we investigate the effects on the CMB of cutting off the primordial power spectrum P (k) at low wave numbers. This could arise, for example, from a break in the inflaton potential, a prior period of matter or radiation domination, or an oscillating scalar field which couple...

The triaxial strongly deformed (TSD) bands in 167Lu were populated by the 123Sb(48Ca, 4n) reaction with a beam energy of 203 MeV. Gamma rays, requiring five fold or more in prompt coincidence, were detected with the Gammasphere spectrometer. Of particular interests are TSD bands 1 and 2 which have previously been interpreted as zero phonon and one phonon wobbling bands, respectively. Using the ...

Cyanobenzenes have recently been suggested as good candidates for the detection of aromatic molecules in interstellar space [1–3], partly due to their large dipole moments. The simplest molecule from this class is benzonitrile (C6H5CN), which might be detectable, for example, in the proto-planetary nebula CRL 618 [1, 2]. These predictions are based on an assumed abundance of 10 and a dipole mom...

Z. Naturforsch. 53 a , 358-361 (1998); received March 24, 1998 Two theoretical evaluations of 5 7 Fe quadrupole moment ( 0 , based on different formalisms, namely the Hartree-Fock theory and the Linearized Augmented Plane Wave method have yielded results differing by a factor of two. In both cases, Q was obtained f rom experimental quadrupole interaction frequencies through investigation of the...

We have selected and spatially separated the two conformers of 3-aminophenol (C6H7NO) present in a molecular beam. Analogous to the separation of ions based on their mass-to-charge ratios in a quadrupole mass filter, the neutral conformers are separated based on their different mass-to-dipole-moment ratios in an ac electric quadrupole selector. For a given ac frequency, the individual conformer...

– We investigate the electronic structure and properties of Rydberg atoms exposed to a magnetic quadrupole field. It is shown that the spatial as well as generalized time reversal symmetries lead to a two-fold degeneracy of the electronic states in the presence of the external field. A delicate interplay between the Coulomb and magnetic interactions in the inhomogeneous field leads to an unusua...

The nuclear quadrupole interaction of the first excited I=1 state of Sc in the anatase and rutile modifications of bulk TiO2 was determined by time-differential perturbed-angular correlation of rays. New LaBr3 Ce scintillators with excellent energy resolution allowed us to separate the 68 and 78 keV lines of the cascade. For anatase, an almost axially symmetric electric field gradient EFG with ...