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Displaying records 21 to 30 of 211 records.
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21. Report of Special Nuclear Material Validation Measurements for Backpack Type Radiation Detectors
Series: Technical Note (NIST TN)
Report Number: 1808
Topic: Physics
Published: 8/19/2013
Authors: Leticia S Pibida, Christina Ward
Abstract: This report provides results and recommendations from the validation testing for the different source configurations and radiation fields produced by special nuclear materials (SNMs) and depleted uranium (DU) listed within the Technical Capabilit ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=914345

22. Spectral responsivity based calibration of photometer and colorimeter standards
Topic: Physics
Published: 6/19/2013
Author: George P Eppeldauer
Abstract: Several new generation transfer- and working-standard illuminance meters and tristimulus colorimeters have been developed at the National Institute of Standards and Technology (NIST) to measure all kinds of light sources with low uncertainty. The spe ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=913528

23. Classical over-the-barrier model for neutralization of highly charged ions above thin dielectric films
Topic: Physics
Published: 6/3/2013
Authors: Joshua M Pomeroy, Russell Lake, C E Sosolik
Abstract: We apply the classical over-the-barrier model (COB) to charge transfer between highly charged ions (HCIs)and targets consisting of thin dielectric films on metals. Distances for the onset of classically allowed above surface electron capture are ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912480

24. Lattice damage in superconducting microcalorimeter detectors
Topic: Physics
Published: 6/3/2013
Authors: Robert Daniel Horansky, Joel Nathan Ullom, Michael W Rabin
Abstract: There is currently significant interest in using superconducting detectors for measurement of ion kinetic energies. Unprecedented resolution is possible with an order of magnitude improvement over semiconductors. Superconducting detectors are now ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912643

25. Modulated photocurrent spectroscopy of CdTe/CdS solar cells-equivalent circuit analysis
Topic: Physics
Published: 5/20/2013
Authors: Behrang H Hamadani, John F Roller, Kounavis Panagiotis, Nikolai B Zhitenev, David J Gundlach
Abstract: We have used the technique of photocurrent modulated spectroscopy to investigate the dynamic response of charge carrier transport in thin film CdTe/CdS solar cells as a function of light bias and temperature over a broad excitation frequency range. T ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912092

26. Controlling the Competition between Optically Induced Ultrafast Spin-Flip Scattering and Spin Transport in Magnetic Multilayers
Topic: Physics
Published: 5/7/2013
Authors: Justin M Shaw, Hans Toya Nembach, Thomas J Silva, Margaret M. Murnane, Henry C. Kapteyn, Martin Aeschlimann, Claus M. Schneider, Emrah Turgut, Stefan Mathias, Patrik Grychtol, Chan La-O-Vorakiat, Dennis Rudolf, Roman Adam
Abstract: The study of ultrafast dynamics in magnetic materials provides rich opportunities for greater fundamental understanding of correlated phenomena in solid-state matter, because many of the basic microscopic mechanisms involved are as-yet unclear and ar ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912515

27. Demonstrating a High Symmetric Single-Photon Heralding Efficiency in Spontaneous Parametric Downconversion
Topic: Physics
Published: 5/6/2013
Authors: Marcelo Pereira, Francisco E. Becerra Chavez, Boris L. Glebov, Jingyun Fan, Sae Woo Nam, Alan L Migdall
Abstract: We demonstrate a symmetric, single-spatial mode, single-photon heralding efficiency of 84% for a type-II spontaneous parametric downconversion process. This achievement of high efficiency, single-spatial mode collection is key to enabling many quantu ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=913209

28. Experimental Parameters for a Reactor Antineutrino Experiment at Very Short Baselines
Topic: Physics
Published: 4/23/2013
Author: Hans P Mumm
Abstract: Reactor antineutrinos are used to study neutrino oscillation, search for signatures of non-standard neutrino interactions, and to monitor reactor operation for safeguard applications. The flux and energy spectrum of reactor antineutrinos can be predi ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=913270

29. The Biological Evidence Preservation Handbook: Best Practices for Evidence Handlers
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 7928
Topic: Physics
Published: 4/23/2013
Authors: Susan M Ballou, Margaret C Kline, Mark David Stolorow, Melissa K Taylor, Shannan Williams, Phylis S Bamberger, Burney Yvette, Larry Brown, Cynthia E. Jones, Ralph Keaton, William Kiley, Karen Thiessen, Gerry LaPorte, Joseph Latta, Linda E Ledray, Randy Nagy, Linda Schwind, Stephanie Stoiloff, Brian Ostrom
Abstract: The report of the Technical Working Group on Biological Evidence Preservation offers guidance for individuals involved in the collection, examination, tracking, packaging, storing, and disposition of biological evidence. This may include crime sc ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=913699

30. Spin transport parameters in metallic multilayers determined by ferromagnetic resonance measurements of spin-pumping
Topic: Physics
Published: 4/19/2013
Authors: Carl Thomas Boone, Hans Toya Nembach, Justin M Shaw, Thomas J Silva
Abstract: We measured spin-transport in nonferromagnetic (NM) metallic multilayers from the contribution to damping due to spin pumping from a ferromagnetic Co^d90^Fe^d10^ thin film. The multilayer stack consisted of NM^d1^/NM^d2^/Co^d90^Fe^d10^(2 nm)/NM^d2^/N ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=912988



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