Now showing items 91-100 of 1507
802GHz integrated horn antennas imaging array
(Kluwer Academic Publishers-Plenum Publishers; Plenum Publishing Corporation ; Springer Science+Business Media, 1991-05)
This short paper presents the pattern measurements at 802GHz of a single element in a 256-element integrated horn imaging array. The integrated-horn antenna consists of a dipole-antenna suspended on a 1μm dielectric membrane ...
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 ...
Schlieren and dye laser resonance absorption photographic investigations of KrF excimer laser‐ablated atoms and molecules from polyimide, polyethyleneterephthalate, and aluminum
(The American Institute of Physics, 1992-09-01)
Hydrodynamic phenomena from KrF excimer laser ablation (10−3–20 J/cm2) of polyimide, polyethyleneterephthalate, and aluminum are diagnosed by schlieren photography, shadowgraphy, and dye laser resonance absorption photography ...
Extrinsic transient diffusion in silicon
(The American Institute of Physics, 1991-05-27)
The effect of extrinsic background doping on the transient enhancement of dopant diffusion for an ion‐implanted dopant is investigated to gain insight into the role of point defect charge states. The transient effect is ...
The ultrahigh-peak-power laser: present and future
(Springer-Verlag, 1997-08)
to 10 20 -W/cm 2 range. With some refinements and with superior energy storage materials, even higher peak power in the petawatt range should be possible from tabletop systems. In this paper we show the ultimate achievable ...
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 ...
The search for a permanent electric dipole moment using 129Xe and 3He
(The American Institute of Physics, 1993-06-10)
Time reversal and parity non‐invariant interactions within an atom naturally give rise to an atomic permanent electric dipole moment (PEDM). For noble gas atoms, the size of such a PEDM scales as Z2 and higher powers of Z ...
Landau-cutkosky rules, scale invariance, and the marginal fermi liquid
(Elsevier, 1992-09)
With the aid of the reduced graph expansion relating different order multiple interaction vertices and the exact spectral densities, we show that a strongly coupled Fermi system can allow solutions for the spectral density ...
Deactivation of highly excited CS2CS2 and SO2SO2 by rare gases
(The American Institute of Physics, 1998-02-08)
The time dependent thermal lensing (TDTL) technique has been used to study collisional energy transfer from highly excited CS2CS2 in baths of Xe, Kr, and Ar, and from highly excited SO2SO2 in Kr and Ar. Bath gas pressures ...