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Tuesday, May 19, 2020 | History

3 edition of Low-energy positron flux generator for microstructural characterization of thin films found in the catalog.

Low-energy positron flux generator for microstructural characterization of thin films

Jag J. Singh

Low-energy positron flux generator for microstructural characterization of thin films

by Jag J. Singh

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  • 25 Currently reading

Published by National Aeronautics and Space Administration, Office of Management, Scientific and Technical Information Division, For sale by the National Technical Information Service] in [Washington, DC], [Springfield, Va .
Written in English

    Subjects:
  • Thin films.,
  • Positron annihilation.

  • Edition Notes

    Other titlesLow energy positron flux generator ....
    StatementJag J. Singh, Abe Eftekhari, Terry St. Clair.
    SeriesNASA technical paper -- 3074.
    ContributionsEftekhari, Abe., St. Clair, Terry L., United States. National Aeronautics and Space Administration. Scientific and Technical Information Division.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL18035037M

    You can write a book review and share your experiences. Other readers will always be interested in your opinion of the books you've read. Whether you've loved the book or not, if you give your honest and detailed thoughts then people will find new books that are right for them.,,,, Free ebooks since Azofeifa:Temperature- and hydrogen-induced changes in the optical properties of Pd capped V thin films Carat: An Explanation of Low-energy Nuclear Reactions (Cold Fusion) by Edmund Storms Hisanaga: Hydrogen in Platinum Films Electrodeposited from Dinitrosulfatoplatinate(II) Solution.

    Annealing effect on cadmium in situ doping of chemical bath deposited PbS thin films Thangavel, S ; Ganesan, S ; Saravanan, K ; Thin Solid Films, , Vol,Iss, pp– MSG, IGCAR, kalpakkam. Local structural studies of the cubic Cd1-xCaxO system through Cd K-edge extended X-ray absorption spectroscopic studies. The neutron-induced positron source Munich (NEPOMUC) provides a monochromatic low-energy positron beam with an intensity of > 110 9 e + /s and a diameter of ≈ 10 mm. To create a small beam focus or sharp positron pulses of ps the beam brightness needs to be enhanced by re-moderation.

    spin-polarized positron annihilation spectroscopy in strong magnetic field for detecting vacancy-induced magnetism and (iii) the low-energy positron diffraction for the structural analysis of surfaces containing heavy atoms. In this report, we pick up the achievements of theme (i) and (iii) in the last fiscal year (). S1 P06 STRUCTURAL, MORPHOLOGICAL, ELECTRICAL, AND OPTICAL CHARACTERIZATION of ZnTe THIN FILMS O. TOMA, Raluca CONSTANTINEANU, C. VANCEA, I. STAN, A. RADU, L. ION, S. ANTOHE University of Bucharest, Faculty of Physics, Atomistilor Street, PO Box MG, , Magurele-Ilfov, Romania e-mail: .


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Low-energy positron flux generator for microstructural characterization of thin films by Jag J. Singh Download PDF EPUB FB2

Nuclear Instruments and Methods in Physics Research B79 () North-Holland Beam Interactions with Materials ft Atoms Microstructural characterization of thin polymer films using the Langley low energy positron flux generator * J.J.

Singh NASA Langley Research Center, Hampton, VAUSA Thin, high-performance polymer films are finding widespread Cited by: 1. Get this from a library. Low-energy positron flux generator for microstructural characterization of thin films. [Jag J Singh; Abe Eftekhari; Terry L St Clair; United States.

National Aeronautics and Space Administration. Scientific and Technical Information Division.]. A slow positron flux generator using well-annealed polycrystalline tungsten moderators and a 22 Na positron source has been developed for lifetime studies in thin polymer films.

A μC source, deposited on a μm thick aluminized mylar film, is sandwiched between two cm thick cm × cm tungsten cm× cm test polymer films, whose Cited by: 2. 1 Nanostructuring of Iron Thin Films by High Flux Low Energy Helium Plasma A.

2Bieberle-Hütter1, I. Tanyeli 1, R. Lavrijsen, B. Koopmans 2, R. Sinha 1, M.C.M. van de Sanden 1, 3 1 Electrochemical Materials and Interfaces, Dutch Institute for Fundamental Energy Research. Characterization of the energy flux toward the substrate during magnetron sputter deposition of ZnO thin films Article in Plasma Sources Science and Technology 22(2).

Request PDF | Pore Characteristics of Low-Dielectric-Constant Films Grown by Plasma-Enhanced Chemical Vapor Deposition Studied by Positron Annihilation Lifetime Spectroscopy |.

Abstract. In our previous paper [1] we have presented a simple theoretical model of the description of the low energy electron diffraction LEED by a thin film treated as a system of a few monoatomic layers parallel to each other and evaporated on a : K.

Stachulec. A simple dynamical approach to the description of the low energy electron diffraction (LEED) intensity is presented using the quantum field methods developed in thin film theories [1, 2, 5].

The scattering amplitude of the electrons scattered by the metallic thin film is expressed in terms of the surface electron density modulated by lattice vibrations of the atoms Author: K. Stachulec. Protons of energy 10–30 keV impinged on free‐standing films of Au, Er2O3, and Sc2O3 of thickness – Å.

Results are reported of the stopping power, energy, and angular spread of the transmitted Cited by: 7. # Exploration of Electrochemical Processes for Creating Nb3Sn Thin Films via Bronze Route by Choong-Un Kim # Analyzing ion beam irradiation effects in materials by multimodal microstructural characterization by ARUN DEVARAJ # Advances in High Flux Compact D-D Neutron Generator using an Off-Resonance Electron Cyclotron.

Issues in Structural and Materials Engineering: Edition is a ScholarlyEditions™ eBook that delivers timely, authoritative, and comprehensive information about Structural and Materials Engineering. The editors have built Issues in Structural and Materials Engineering: Edition on the vast information databases of ScholarlyNews.™ You can expect the information about.

[] KRŠJAK, V.: Potential of Positron Annihilation Lifetime Spectroscopy in Microstructural Study of Nuclear Reactor Steels. In: Journal of Electrical Engineering. - ISSN Thin iron films (80 nm) were firstly amorphized by boron implantation and subsequently irradiated with nitrogen ions in dose range 1** ions/cm2.

Energy and current density of implantation were 20 keV and A/cm2 respectively. Nevertheless, in thin films, in spite of the small amount of thickness and the small amount of damage deposited by self-ions, very large loops were detected, even larger than – nm distributed homogeneously within the material (Figure 16c and d).

In addition, differences between Burger vectors and population density have been : Marcelo Roldán, Patricia Galán, Fernando José Sánchez, Isabel García-Cortés, David Jiménez-Rey, Pila.

Microstructural investigations of keV Ar ions irradiated nanocrystalline ZrN thin films D. Craciun, B. Vasile, E. Lambers, H. Makino, V. Craciun. Probimide and SiO2 thin films were deposited to aid the LT lift-off process before the pattern generation. Interdigitated structure was achieved by photolithography and reactive ion etching.

Pd Schottky metal was deposited at a substrate temperature near 77 K using a lift-off technique. 5 Thin-Film Materials and Processes Thin films versus bulk materials Physical vapour deposition (PVD) Evaporation and molecular beam epitaxy.

Recently, a new approach based on intercalation of atomic layers of MI, referred to as magnetic extension, was proposed to realize strong MPE [2D Mater. 4, ()]. Motivated by this proposal, here, we study a magnetic extension system prepared by molecular beam epitaxy growth of MnSe thin films on topological insulator (Bi,Sb)2Te3.

Siam Physics Congress ( May ) Indico Co-organizers. Animation & Cartoons Arts & Music Computers & Technology Cultural & Academic Films Ephemeral Films Movies News & Public Affairs. Understanding 9/ Spirituality & Religion Sports Videos Television Videogame Videos Vlogs Youth Media Converse Access Television.

Featured. Contents Composites. Behaviour and characterisation Design, manufacture and applications Conference proceedings. Civil engineering. 2 6 Materials and .K Fabrication and characterization of rectangular thin film planar loops for transformer applications Gregory A.

Topasna, Daniela M. Topasna, Frank R. Powell. This study focuses on optimizing the configuration and performance of a thin film planar loop that is flux linked to a .Microstructural characterization of P91 steel in the virgin, service exposed and post-service re-normalized conditions, Huijun Li and David Mitchell.

PDF. Microstructural evolution and mechanical property of AA alloy deformed by accumulative roll bonding, Kuiyu Cheng, Cheng Lu, A Kiet Tieu, and Hongtao Zhu. PDF.