On Cauchy problem for first order nonlinear functional differential equations of non-Volterra’s type

summary:On the segment $I=[a,b]$ consider the problem $$u^{\prime }(t)=f(u)(t) , \quad u(a)=c,$$ where $f\:C(I,\mathbb{R})\rightarrow L(I,\mathbb{R})$ is a continuous, in general nonlinear operator satisfying Carathéodory condition, and $c\in \mathbb{R}$. The effective sufficient conditions guaranteeing the solvability and unique solvability of the considered problem are established. Examples verifying the optimality of obtained results are given, as well

Commercial waste and spent fuel packaging program. Quarterly report, October-December 1980

This document is a report of activities performed by Westinghouse Advanced Energy Systems Division-Nevada Operations at the E-MAD Facility, Area 25, Nevada Test Site, in meeting subtask objectives during the first quarter of Fiscal Year 1981. These activities include the receipt and setup of the Plasma Welder for weld development; continuation of the Drywell Interaction Tests and the 2 kw Drywell Test; completion of the 2 kw Fuel Temperature Test and the 3 kw Soil Temperature Test; major overhaul of the Wall Mounted Handling System; installation of the major part of the Remote Air Monitor (RAM) System; and disassembly and packaging of the Reactor Maintenance, Assembly and Disassembly Building (R-MAD) windows

Commercial waste and spent fuel packaging program. Quarterly report, July through September 1980

This document is a report of activities performed by Westinghouse Advanced Energy Systems Division-Nevada Operations at the E-MAD Facility, Area 25, Nevada Test Site, in meeting subtask objectives during the fourth quarter of Fiscal Year 1980. These activities include removal of the one kilowatt (kw) spent fuel assembly and installation of a two kw assembly into the Fuel Temperature Test in the West Process Cell; transfer of fueled canisters to Drywells 1, 2 and 3, and initiation of the Drywell Interaction Test; initiation of the two kw Drywell Test in Drywell 5; calorimetry; gas sampling; neutron spectra measurement; installation and qualification of the Canister Cutter; and continuation of the three kw Soil Temperature Test

Non-uniform carrier density in Cd3_3As2_2 evidenced by optical spectroscopy

We report the detailed optical properties of Cd$_3$As$_2$ crystals in a wide parameter space: temperature, magnetic field, carrier concentration and crystal orientation. We investigate high-quality crystals synthesized by three different techniques. In all the studied samples, independently of how they were prepared and how they were treated before the optical experiments, our data indicate conspicuous fluctuations in the carrier density (up to 30%). These charge puddles have a characteristic scale of 100 $\mu$m, they become more pronounced at low temperatures, and possibly, they become enhanced by the presence of crystal twinning. The Drude response is characterized by very small scattering rates ($\sim 1$ meV) for as-grown samples. Mechanical treatment, such as cutting or polishing, influences the optical properties of single crystals, by increasing the Drude scattering rate and also modifying the high frequency optical response. Magneto-reflectivity and Kerr rotation are consistent with electron-like charge carriers and a spatially non-uniform carrier density.Comment: Accepted in Physical Review

Magneto-optical signature of massless Kane electrons in Cd3As2

We report on optical reflectivity experiments performed on Cd3As2 over a broad range of photon energies and magnetic fields. The observed response clearly indicates the presence of 3D massless charge carriers. The specific cyclotron resonance absorption in the quantum limit implies that we are probing massless Kane electrons rather than symmetry-protected 3D Dirac particles. The latter may appear at a smaller energy scale and are not directly observed in our infrared experiments.Comment: 5 pages, 4 figures + supplementary materials (17 pages), to be published in Phys. Rev. Let