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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 16 of 16 for “"quadrupole moment"”.
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Determination of the Spectroscopic Quadrupole Moment of 40Ar
Coulomb excitation reorientation e ects measurement was performed at the AFRODITE vault of iThemba LABS to determine the Qs(2+1 ) of 40Ar. A beam of 40Ar at a laboratory energy of 134.94 MeV was Coulomb excited on a 194Pt target at a safe distance between nuclear surfaces of 6.5 fm. The backward …
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Equation of state of rotating neutron stars
… neutron star properties such as dimensionless quadrupole moment vs compactness, dimensionless moment of inertia vs M/R, dimensionless moment of inertia vs dimensionless quadrupole moment and dimensionless moment of inertia vs dimensionless tidal deformability. The significance of the low energy …
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Applications of Nuclear Quadrupole Double Resonance Spectroscopy
Nuclear Quadrupole Resonance (NQR) spectroscopy measures the interaction of a nucleus possessing an electric quadrupole moment Q with the electric field gradient (efg) produced at the nucleus by its local electronic environment. As a result, the NQR technique provides information on the ground …
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Electromagnetic properties of baryons from lattice QCD
… while maintaining current conservation. Magnetic moments, charge radii and magnetic radii are extracted from the electric and magnetic form factors for each individual quark sector. From these the corresponding baryon properties are constructed. Our results for the octet baryons are compared with …
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ION TRAP SYSTEM TOWARDS 176LU+ 3D2 CLOCK TRANSITION
… results are used to extract the residual quadrupole moment of the 3D2 state arising from hyperfine-mediated effects, corresponding to a frequency shift at the low 10-19 level.
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Computer simulation and theoretical prediction of thermally induced polarisation
… of the electric field. We further show that the quadrupole-moment contribution to the electric field is significant and responsible for an inversion of its sign. To facilitate the theoretical description of electrostatic interactions, we propose a new dipolar model fluid as a perturbation of a …
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AN EXPERIMENTAL STUDY OF THE EFFECTS OF SUBSTRATE POROSITY, MORPHOLOGY, AND FLEXIBILITY ON THE EQUILIBRIUM THERMODYNAMICS AND KINETICS OF ADSORPTION FOR ATOMIC AND MOLECULAR ADSORBATES
… linear molecular adsorbate with a permanent quadrupole moment adsorbing on a substrate with quasi-1D grooves and convex outer adsorption sites. Ethane-cNH is a system with a linear alkane adsorbing on a substrate with conical pores and convex outer adsorption sites. Ar – oNH is a system with …
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A search for fast pulsars in globular clusters
… to the advance of periastron from a nonzero quadrupole moment due to tidal interaction with the companion. Measurements of the period derivatives for many of the pulsars show that they are dominated by the dynamical effect of the gravitational field of the clusters. Finally, we have …
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X-ray timing of the accreting millisecond pulsar SAX J1808.4-3658
… field and Q < 4.4 x 1036 g cm2 for the mass quadrupole moment. We also measured an orbital period derivative of Porb = (3.5 + 0.2) x 10-12 s s-1 We identify a strong anti-correlation between the fractional amplitude of the harmonic (r2) and the X-ray flux (fx) in the persistent pulsations of …
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Gravitational waves as direct probes of binary evolution and astrophysical environments
… can extract enough orbital energy and angular momentum, many of which are wrought with uncertainty. The main theme of this dissertation is the interplay of relativistic gravity and astrophysics, where gravitational radiation in the presence of binary interactions or astrophysical environments …
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Solid state and nuclear results from Mössbauer studies with I[superscript 129]
… of the iodates and periodate is 0.61 e. d) The quadrupole splitting of K103 was used to determine the 1129 quadrupole ratio, Q26.8/Qgnd """" 1,23 ± 0.02. The asymmetry of the iodate spectrum and the sign of quadrupole moment show that the sign of the iodate field gradient is negative. The values …
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Density Functional Theory augmented Multiplet Ligand Field Theory Applied to X-ray Spectroscopy of 3d Transition Metals
… and geometric indicators such as the normalized quadrupole moment, and provides a continuous, quantitative method for characterizing spectral anisotropy.
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Advances in ab initio approaches to nuclear structure, reaction and nucleonic dynamics
… root-mean-square point-proton radius, electric quadrupole moment, magnetic dipole moment, Gamow-Teller transition and neutrinoless double-beta decay operator using nucleon-nucleon interactions from chiral effective field theory. Renormalization effects tend to be larger in the weaker traps and …
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Scattering of aligned H₂ from Si(100)
… the surface and an impinging molecule’s angular momentum. Our experiment measures the likelihood of a reorientingcollision, where the magnitude of the molecule’s angular momentum is preserved but its direction changed. An initial laser pulse transforms a beam of H₂ molecules from a supersonic …
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Compact Objects In Relativistic Theories Of Gravity
… bulk properties of these objects, such as their quadrupole moment and tidal deformability, are tightly correlated. Next, we develop a formalism that aims to capture how generic modifications from general relativity affect the structure of neutron stars, as predicted by a broad class of gravity …
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Electric multipole moments and higher-order topological phases in crystalline insulators and superconductors
… patterns compatible with the notion of quadrupole and octupole electric moments. In the presence of certain symmetries, these moments are quantized, and their boundary signatures fractionalized. These higher multipole moments then correspond to new symmetry-protected topological phases …