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Viscosity of cesium metal to its critical temperature
None
Date:
July 1, 1973
Creator:
Tsai, H. C.
System:
The UNT Digital Library
Exact analytical solution to the two-body problem with a separable (nonlocal) central and tensor interaction
None
Date:
July 1, 1973
Creator:
Lee, C.E.
System:
The UNT Digital Library
Generation of Rayleigh waves by underground of nuclear explosions: an examination of the effect of spall impact and site configuration
Thesis. The effect of spall impact, site configuration, and the material properties of rocks at the blast site on the generation of Rayleigh waves by underground nuclear explosions was examined by experimental and computational methods. The hypothesis was that the impact of earth and rock, i.e., spall, falling back after being kicked up by the initial shock wave of an explosion is a source of surface waves observed from explosions. A comparison of amplitudes derived from spall momentum with observed Rayleigh amplitudes at ranges of from 50 to 500 km showed that the spall has sufficient impulse to account for these waves. In the site configuration studies it was found that the strongest signal was produced by a horizontally distributed source placed beneath a mountain, and the weakest signal was produced by a concentrated source placed beneath a flat plain. The horizontal dimension of the source had the biggest effect on the Rayleigh amplitude. Based on laboratory measurements of the mechanical properties of rocks in drill cores from the Boxcar and Gasbuggy sites, calculations were made of the spall impulse and surface displacement profiles from these explosions. The numerically obtained profiles were in reasonable agreement with values inferred from accelerometer …
Date:
July 1, 1973
Creator:
Viecelli, J.A.
System:
The UNT Digital Library
Differential cross sections in $pi$-p $Yields$ K$sup 0$$lambda$$sup 0$ and $pi$$sup +$p $Yields$ K$sup 0$$Sigma$$sup 0$ from 3 to 6 GeV/c
None
Date:
July 1, 1973
Creator:
Ward, C. E. W.; Ambats, I.; Lesnik, A.; Meyer, W. T.; Rust, D. R. & Yovanovitch, D. D.
System:
The UNT Digital Library
Calculations of the ground state energy and exchange integrals of crystalline $sup 3$He
Thesis. The variational equation is derived and discussed using Jastrowtype wave functions, which are a product of pair wave functions, as the trail wave function. The various approximations used in simplifying the variational equations so as to obtain a form that is possible to solve numerically are discussed also. A Monte Carlo calculation is described using the wave function obtained. Exchange in /sup 3/He is discussed. (MHR)
Date:
July 1, 1973
Creator:
Lim, W L
System:
The UNT Digital Library
Geometry of some metal halides
Thesis. Two polarizable ion models are developed to describe the gas phase of metal dihalide molecules. Both models use electrostatic and repulsive interactions to predict molecular geometries and molecular constants. The first model is applied to the dihalides of the alkaline earths, group II-b metals, transition metals, group IV-a metals, and europium. In addition to the molecular geometry, bending frequencies are derived for most of these molecules. The second or linear'' model is applied to the alkaline eanth dihalides; equilibrium internuclear bond lengths, stretching force constants, and stretching frequencies are determined. (LK)
Date:
July 1, 1973
Creator:
Yarnell, P.A.
System:
The UNT Digital Library
Fluctuation effects on the conductivity of Nb and NbN films
None
Date:
July 1, 1973
Creator:
Chard, L A
System:
The UNT Digital Library
Pair-quasiparticle potential differences in current-carrying superconductors
None
Date:
July 1, 1973
Creator:
Paterson, J.L.
System:
The UNT Digital Library