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Displaying records 41 to 50 of 282 records.
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41. Cross-validation of microfabricated atomic magnetometers with SQUIDs for biomagnetic applications
Topic: Physics
Published: 9/28/2010
Authors: Svenja A Knappe, Tillman H. Sander, Olaf Kosch, Frank Wiekhorst, John E Kitching, Lutz Trahms
Abstract: A chip-scale atomic magnetometer (CSAM) is compared with a superconducting quantum interference devices (SQUID) sensor in two biomedical applications. CSAMs are magnetic field sensors that operate at room temperature and are based on spectroscopy of ...

42. Cryogenic Design and Performance of an Apparatus for Magnetically Trapping Ultracold Neutrons
Topic: Physics
Published: 10/5/2014
Author: Hans P Mumm
Abstract: The cryogenic design and performance of an apparatus used to magnetically confine ultracold neutrons (UCN) is presented. The apparatus is part of an effort to measure the beta-decay lifetime of the free neutron and is comprised of a high-current su ...

43. Crystalline Order in Laser-cooled, Non-neutral Ion Plasmas
Topic: Physics
Published: 1/1/2000
Authors: John J Bollinger, T M Mitchell, X -P Huang, Wayne M Itano, Joseph N Tan, Branislav M. Jelenkovic, David J Wineland

44. Decoherence due to elastic Rayleigh scattering
Topic: Physics
Published: 11/12/2010
Authors: Hermann Uys, Michael J. Biercuk, Aaron Vandevender, Christian Ospelkaus, Dominic Meiser, R. Ozeri, John J Bollinger
Abstract: We present theoretical and experimental studies of the decoherence of hyperfine ground-state superpositions due to elastic Rayleigh scattering of off-resonant light. We demonstrate that under appropriate conditions, elastic Rayleigh scattering can b ...

45. Dedicated NOAA/JPSS VIIRS Ocean Color Calibration/Validation Cruise
Topic: Physics
Published: 6/12/2015
Authors: Bettye C Johnson, Michael Ondrusek, Eric Stengel, Veronica P. Lance, Menghua Wang, Kenneth Voss, Giuseppe Zibordi, Marko Talone, Zhongping Lee, Jianwei Wei, Junfang Lin, Chuanmin Hu, David English, Charles Kovach, Jennifer Cannizzaro, Alex Gilerson, Sam Ahmed, Ahmed El-Habashi, Robert Foster, Robert Arnone, Ryan Vandermeulen, Sherwin Ladner, Wesley Goode, Joaquim I Goes, Helga de Rosario Gomes, Alex Chekalyuk, Kali McKee, Scott Freeman, Aimee Neeley, Amir Ibrahim
Abstract: The NOAA/STAR Ocean Color team is focused on ,end-to-endŠ production of ocean color satellite products. In situ validation of satellite data is essential to producing the high-quality products required and expected by the international ocean color re ...

46. 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 ...

47. Density functional theory study of clean, hydrated, and defective alumina (1-102) surfaces
Topic: Physics
Published: 4/1/2010
Authors: Sara E. Mason, Christopher R. Iceman, Thomas P. Trainor, Anne M. Chaka
Abstract: We report an ab initio thermodynamic analysis of the a-Al2O3 (1-102) surface aimed at understanding the experimentally observed terminations over a range of surface preparation conditions, as well as a novel stoichiometric model for the (2x1) surface ...

48. Depletion Effects and Gelation in a Binary Hard-Sphere Fluid
Topic: Physics
Published: 12/1/1999
Authors: L L Lue, L V Woodcock

49. Detection of l-C3H+ in Sgr B2(N) and Sgr B2(OH) and Refinement of its Spectroscopic Constants via the Publicly Available PRIMOS Survey and the Barry E. Turner Legacy Survey
Topic: Physics
Published: 9/1/2013
Authors: Francis John Lovas, Brett A. McGuire, P. Brandon Carroll, Ryan A. Loomis, Geoffery A. Blake, Jan M. Hollis, Phillip R. Jewell, Anthony J. Remijan
Abstract: Pety et al. (2012) recently reported the detection and assignment of l-C3H+ in the Horsehead nebula. Here, we expand that analysis to include the J = 1 - 0 and J = 2 - 1 transitions of l-C3H+ observed in absorption towards Sgr B2(N) in data from the ...

50. Determination of graphene work function and graphene-insulator-semiconductor band alignment by internal photoemission spectroscopy
Topic: Physics
Published: 7/11/2012
Authors: Rusen Yan, Qin Q. Zhang, Wei Li, Irene G. Calizo, Tian T. Shen, Curt A Richter, Angela R Hight Walker, Xuelei X. Liang, David J Gundlach, Nhan V Nguyen, Huili Grace Xing, Alan Seabaugh
Abstract: We determined the band alignment of a graphene-oxide-silicon structure using internal photoemission spectroscopy. From the flatband voltage and Dirac voltage we infer a 4.3  10e11 cm-2 negative extrinsic charge present on the graphene surface. Als ...

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