Monolithic integration of InGaAs p-i-n photodetector with full ion-implanted InP JFET amplifier

monolithically integrated p-i-n FET amplifier has been fabricated using ion-implanted indium phosphide (InP) JFETs. The vertically integrated material structure consists of a vapor phase epitaxy (VPE) grown InCaAs photoabsorption layer and a metal organic chemical vapor deposition (MOCVD) grown Fe-doped semi-insulating layer. A Zn diffusion was performed to complete the p-i-n photodiode. High-performance fully implanted InP JFETs were used to form the integrated amplifier with a symmetrical design to remove the dc offset. With a receiver sensitivity of ~ 36.4 dBm measured at 200-Mbit/s NRZ for IO RER, it is easily the most sensitive monolithic p-i-n FET preamp yet reported in this frequency range. The p-i-n amplifier has a dynamic range of 15 dH.The authors would like to acknowledge the help from Y. Ota, J. M. Geary, R. E. Frahm, and K. J. OBrien in device packaging and in dielectric deposition

Design and Performance of the XENON10 Dark Matter Experiment

XENON10 is the first two-phase xenon time projection chamber (TPC) developed within the XENON dark matter search program. The TPC, with an active liquid xenon (LXe) mass of about 14 kg, was installed at the Gran Sasso underground laboratory (LNGS) in Italy, and operated for more than one year, with excellent stability and performance. Results from a dark matter search with XENON10 have been published elsewhere. In this paper, we summarize the design and performance of the detector and its subsystems, based on calibration data using sources of gamma-rays and neutrons as well as background and Monte Carlo simulations data. The results on the detector's energy threshold, energy and position resolution, and overall efficiency show a performance that exceeds design specifications, in view of the very low energy threshold achieved (<10 keVr) and the excellent energy resolution achieved by combining the ionization and scintillation signals, detected simultaneously

Drama, performance and touch in the medieval convent and beyond

In this analysis we explore the sensory performances of the performer, rather than the spectator, in medieval convent drama, particularly the tactile experiences of clothing, props, wigs, and beards worn by female performers presenting male and female characters

Calculations Predict That Carbon Tunneling Allows the Degenerate Cope Rearrangement of Semibullvalene to Occur Rapidly at Cryogenic Temperatures

Article on calculations predicting that carbon tunneling allows the degenerate cope rearrangement of semibullvalene to occur rapidly at cryogenic temperatures

National Motor-Gasoline Survey

Report issued by the U.S. Bureau of Mines on the motor fuels sold during the winter of 1945-46. The characteristics of the fuels sold, and the regions they were sold in are listed. This report includes tables, and maps