Several schemes under the framework of Dual RSA have been proposed by Sun et al (IEEE-IT, August 2007). We here concentrate on the Dual CRT-RSA scheme and present certain range of parameters for which this is insecure. As a corollary of our work, we prove that the Dual Generalized Rebalanced-RSA (Scheme III of Sun et al) can be efficiently broken for a significant region where the scheme has be...

LiMn2O4 spinel cathode materials have been successfully synthesized by solid-state reaction. Surface of these particles were modified by nanostructured LiFePO4 via sol gel dip coating method. Synthesized products were characterized by thermally analyzed by Thermogravimetric and Differential Thermal Analysis(TG/DTA), X-Ray Diffraction (XRD), Scanning Electron...

A general X-ray tube has two electrodes, the cathode and the anode, with a high voltage applied between them. Electrons are generated at the cathode. After the electrons are emitted from the cathode they are accelerated by the high voltage toward the anode (positive) electrode. The high speed electrons hitting the anode material then generate invisible radiation i.e. X-rays. The energy spectrum...

A highly crystalline LiCoPO4/C cathode material has been synthesized without noticeable impurities via a single step solid-state reaction using CoHPO4·xH2O nanoplate as a precursor obtained by a simple precipitation route. The LiCoPO4/C cathode delivered a specific capacity of 125 mAhg(-1) at a charge/discharge rate of C/10. The nanoplate precursor and final LiCoPO4/C cathode have been characte...

The deployment of in-situ miniature XRD instruments for planetary exploration requires small focus bright X-ray sources that are physically small, lightweight, robust, and power efficient. Existing miniature X-ray tubes are limited by inefficient thermionic electron sources. We have investigated the potential of carbon nanotube (CNT) field emitters for improving the efficiency and durability of...

Using noiseless solid-state CR-39 plastic track and Al2O3:C thermo-luminescent detectors, the yields of 3.0 MeV protons from DD-reaction and soft x-ray photons emitted from the cathode were studied in the periodic pulsing deuterium glow discharge with titanium cathodes at low discharge voltages (in the range 0.8–2.5 kV) and high current density (300–600 mA/cm2). The analysis of DD-proton yield ...

The design and operating characteristics of relativistic, electron beam magnetrons are described. The magnetrons are comprised of a pulsed field-emission cathode (-360kV, ~15kA, -30nsec) and several coupled resonators embedded in the anode block. The tubes are designed to work at fixed frequency, in range from 2.3 to 5GHz. The peak powers generated are typically 500 to 1000MW. *This work was su...

Although there are different types of backlights (light sources) which are currently used for backlighting the latest Liquid Crystal Display modules, this paper will primarily focus on cold cathode fluorescent tubes (CCFT) which are currently the light source of choice in most LCD modules. The intent of the paper is to familiarize the reader with some potential problems and concerns associated ...