Now showing items 11-20 of 168
Weak and strong vibration localization in disordered structures: A statistical investigation
(Elsevier, 1990-05-22)
A statistical investigation of the effects of disorder on the dynamics of one-dimensional nearly periodic structures is presented. The problem of vibration propagation from a local source of excitation is considered. While ...
Theory of lateral bandgap variation achievable by strain engineering in patterned substrate strain epitaxy
(Elsevier, 1990)
Energy minimization considerations are used to estimate the strain tensor for pseudomorphic structures grown on a patterned substrate. We show that if a material B is deposited below critical thickness in a hole of width ...
Thermal conductivity of high- T c superconductors
(Kluwer Academic Publishers-Plenum Publishers; Plenum Publishing Corporation ; Springer Science+Business Media, 1990-12)
This paper reviews existing data on the thermal conductivity of high- T c superconductors. Included are discussions of pristine polycrystalline high- T c ceramics, single crystal specimens, and high- T c materials structurally ...
Smooth massless limit of QED
(Elsevier, 1990-10-29)
Massless QED is studied by introducing different regularization schemes for the resulting mass singularities. It is demonstrated, for the one-loop corrections to electron scattering off an external potential, that cancellation ...
Granite, a new very high energy gamma-ray telescope
(Elsevier, 1990-03)
A international collaboration of astrophysicists plan to construct a new 10-meter diameter gamma-ray Cerenkov telescope at the Whipple Observatory on Mt. Hopkins in Arizona. By operatin in coincidence with the original ...
Gamma-ray spectral imaging using a single-shutter radiation camera
(Elsevier, 1990-12-20)
As part of a program to develop mobile robots for reactor environments, we are developing a radiation-imaging camera capable of operating in medium-intensity (Z scintillator. The raster-scanning camera uses a lead-shielded ...
Investigation of the reaction between 1 and 13 MeV
(Springer-Verlag, 1990-06)
High-precision measurements of the cross section, the vector analyzing power iT 11 and the three tensor-analyzing powers T 20 , T 21 , and T 22 of the 3 He( d, p ) 4 He reaction have been performed in the energy range ...
Earthquake source processes and subduction regime in the Santa Cruz Islands region
(Elsevier, 1990)
The source process of two large earthquakes that occurred in the Santa Cruz Islands subduction zone has been studied, one with a surface wave magnitude MS = 7.9 in 1966 and the other with MS = 7.7 in 1980. The seismic ...
An inclusive and exclusive algorithm for QED evolution
(The American Institute of Physics, 1990-03-05)
A novel algorithm to calculate radiative corrections to e+e− annihilation which is both inclusive and exclusive is proposed. The method uses the structure functions formalism and is based on the factorization of mass ...
Multiple Compton scattering gamma ray imaging camera
(Elsevier, 1990-12-20)
With the recent advances in position sensing detectors, a compact, multiple layered, Compton scattering gamma ray imaging camera has been investigated for technological feasibility. Beginning from Kamea and Hanada's recent ...