... 76, No. 5, 2002, pp. ... Hydrogen Tunneling Modes in a-Mn Suppressed by Elastic Stresses V. E. Antonov1, V. P. Glazkov2, *, D. P. Kozlenko3, B. N. Savenko3, V. A. Somenkov2, and V. K. Fedotov1 1 Institute of Solid State ... 142432 Russia 2 Russian Research Centre Kurchatov Institute, Moscow, 123182 Russia * e-mail: glazkov@isssph.kiae.ru 3 Laboratory of Neutron Physics, Joint Institute for Nuclear Research, Dubna, Moscow region, 141980 Russia Received August 6, 2002 Behavior of the ...

TOWARDS SUPERSENSITIVE BOLOMETERS AND ELECTRON COOLERS BASED ON CARBON NANOTUBES M.TARASOV, J.SVENSSON, S.DITTMER, L.KUZMIN, AND E.CAMPBELL Chalmers University of Technology, GЖteborg SE 41294, Sweden E-mail: Mikhail.tarasov@mc2.chalmers.se Carbon nanotubes (CNT) are being intensively developed for novel electronics. Electron cooling by superconductor-insulator-nanotube (SIN) tunnel junctions could be extremely effective due to the small volume of the CNT. ...

NATIONAL ASTRONOMY AND IONOSPHERE CENTER . ... Astronomy . ... Visitor Center . ... Optical . Lidar . At Arecibo we have a variety of optical instruments that we use to study terrestrial airglow emissions. ... This equipment is located in our Optical Laboratory, which is on site about 1000 feet from the center of the incoherent scatter radar. ... The various observational modes that are available are described in supplementary documentation for the Arecibo Observatory Optical Laboratories. ...

Astronomy Picture of the Day . ... Spanning about 1/2 degree on the sky, the pretty picture is the result of astronomer Johannes Schedler's project to look back in time, toward a quasar 12.7 billion light-years away . ... Of course, the expansion of the Universe has redshifted the light. Schedler added image data extending to the near-infrared, acquired by collaborator Ken Crawford, to detect the distant quasar, with a measured redshift of 6.04. ... Publications with keywords: quasar - redshift . ...

... We describe efforts to develop a robust fabrication technology for making submillimeter detectors integrated with single electron transistors as readout amplifiers. ... Thus, the RF-SET can amplify the small photocurrent generated in a superconducting tunnel junction detector by a single submillimeter photon. ... The antenna, detector, and SET are contained in 4 fields, which are fabricated with electron beam lithography and Al double angle evaporation techniques. ... FABRICATION OF SQPC CHIP . ...

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2007 September 6 . Time Tunnel . ... Spanning about 1/2 degree on the sky, the pretty picture is the result of astronomer Johannes Schedler's project to look back in time, toward a quasar 12.7 billion light-years away . ... The quasar appears as it did about 12.7 billion years ago, when the Universe was just 7 percent of its present age . ...

... Posts tagged ?emission measure? ... Spectral lines are a ubiquitous feature of astronomical data. ... Continue reading ?Line Emission [EotW]? Tags: abundance , emission , emission measure , emissivity , EotW , Equation , Equation of the Week , flux , ion balance , line . ... 2 Comments . ... Entries RSS . ... vlk on [MADS] Parallel Coordinates . upvc windows on [MADS] Parallel Coordinates . ... Alfred Inselberg on [MADS] Parallel Coordinates . ... Entries (RSS) and Comments (RSS) . ...

... Despite new observation methods provided by radar and satellite instrumentation , optical measurements are still important when studying auroras . ... Because of the monochromatic nature of the auroral light, photomultiplier tubes with very narrow band filters were used in the measurements. ... The spectra of the background emissions from atmospheric impurities (clouds, ice crystals, etc.) is rather continuous, and measurements just outside the auroral emission lines are valid for the line itself. ...

INFRARED FOURIER-SPECTROMETER SICH-F . ... Instrument work regimes: 1) Inside. 2) Calibration at inside standard sources 2 - 4 times per a rotation. 3) Calibration at "free space" 2 - 4 times per a rotation. 4) Infrared radiation measuring 10 - 40 min. per a rotation. ... Spectrometer consists of the photodetector block and the block of signal processing and control. ... Diagnostic information and attach data will transfer by state telemetric channels. ... Detector temperature. ...

. XMM-Newton Science Analysis System . eposcorr (eposcorr-3.12) [xmmsas_20070708_1801-7.1.0] . Meta Index / Home Page / Description At the moment we have no rigurous mathematical method to handle the statistical errors of the offsets found. For the moment we use the square root of the second order moment in as a function of off-set divided by the number of optical counter parts. XMM-Newton SOC/SSC -- 2007-07-08

... Firedoors on the old spectrograph tunnel/compтАж . Sidebar Left . Sidebar Top . ... Title: Firedoors on the old spectrograph tunnel/computer room. They worked. Description: NOTE: All images and movies are copyright and must not be reproduced or mirrored in any form without written permission. ... Firedoors on the old spectrograph tunnel/computer room. ... NOTE: All images and movies are copyright and must not be reproduced or mirrored in any form without written permission. ...

The database contains references to the papers, data files and links to the Internet resources related to measurements and calculations of the optical constants in the wavelength interval from X-rays to radio domain. ... References to some useful books and reviews on the subject (e.g. the classical handbooks edited by E.D.Palik) and links to Internet collections of optical constants and personal WWW pages with related software were also placed in the database. You have arrived at our welcome page. ...

4th of December 2015 . Bolton Symposium talk . ... We observe cold neutral atomic hydrogen (HI) self absorption (HISA) clouds throughout our Galaxy against the background of warmer HI emission. ... The Riegel-Crutcher cloud is one of the most famous HISA regions located in front of the Galactic centre. We measure HI absorption against 56 continuum sources in the region to derive the optical depth, the temperature and HI column densities. ... today * ATNF | ...

... Optional: Quantum Physics . ... Energy Levels . ... Consider a proton inside the nucleus. ... Such nuclei, and heavy nuclei close to them in mass, are all on the brink of instability, and even without externally added energy, they find a way to get rid of some of their disruptive positive charge The forces on protons inside these nuclei resemble those on a bunch of marbles inside the "crater" of a volcano-shaped surface--smooth sloping sides outside, but a moderately deep crater on top ( drawing ). ...

All stars derive their energy through the thermonuclear fusion of light elements in to heavy elements. High temperatures are required so that the mutual electrostatic repulsion of the protons in each fusing atomic nucleus is overcome. ... Elements with more protons in their nuclei require higher temperatures. ... This sequence is now shown in the animation below. ... First Step of the Proton-Proton Chain Narration . Second Step of the Proton-Proton Chain Narration . ...

Encrypting network services . Virtual private network solutions . ... Virtual Private Server . Virtual Tunnel . ... Virtually all network traffic is unencrypted and easily read by an attacker. ... Stunnel is an SSL based solution for securing network services. ... Virtual Private Server (VPS) uses Perl and SSH to create VPN's. You can get it from: http://www.strongcrypto.com/ . ... Virtual Private Server is a VPN solution that uses PPP and SSH (basically it provides a nicer interface to it). ...

FEATURES OF THE HYDROGEN DISTRIBUTION AROUND LUNAR CRATERS PROCLUS AND KEPLER. ... In result of analysis of the data Lawrence and Feldman constructed the hydrogen distribution on the lunar surface [1]. ... However, the authors shown, that EN flux data features may be explained by other element abundance in the lunar soils, namely: Si, Ca, Gadolinium (Gd), Samarium (Sm) and Fe. ... Using of the Feldman's interpretation of the Lunar Prospector data [8], we constructed hydrogen distribution map (Fig.1). ...

Testing Mount Stability Alex Rea adr34@cam.ac.uk Cavendish Lab oratory, University of Cambridge FTT Brainstorm Meeting Monday 16th May 2011 Alex Rea (Cavendish Labs, Cambridge) Testing Mount Stability 16th May 2011 1 / 21 Goal Alex Rea (Cavendish Labs, Cambridge) Testing Mount Stability 16th May 2011 2 / 21 Goal Want to discover if the mounts designed meet the stringent stability requirement that we have placed on them. ... The tests for these two cases will almost certainly be different. ...

Next: Detectors Up: Instrument descriptors Previous: Character descriptor FILTCAT . ... It contains the value 'REGULATED' if filter temperature is regulated; 'MEASURED' if filter temperature is measured; and 'DOME' if filters are unregulated, and approximately at dome temperature. ... If FILTSTAT = 'MEASURED' , there should be a data column named FILTTEMP in the data files (see next section) that contains the measured filter temperature. ...

Next: Pulsations Up: PHYSICAL CHARACTERISTICS Previous: PHYSICAL CHARACTERISTICS . The fundamental properties of RCBs may be deduced from their spectra at maximum light. ... The properties of a stellar atmosphere may be measured from both the large-scale features - the broad-band flux distribution - and the detailed spectrum of absorption lines. ... They show that, in general, hydrogen makes up less than one part per thousand down to less than one part per million of the stellar atmosphere. ...