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NIST Authors in Bold

Displaying 926 - 950 of 1415

Phase Competition in the Palmer-Chalker XY Pyrochlore Er 2 Pt 2 O 7

October 30, 2017
Author(s)
A. M. Hallas, J. Gaudet, Nicholas Butch, Guangyong Xu, M. Tachibana, C. R. Wiebe, Graeme M. Luke, Bruce D. Gaulin
… magnetic structures at much higher temperatures, with Τ ν=1.2 K and 1.4 K, respectively. Instead, in this temperature range, the … Er d2^Pt 2 O 7 contains a broad anomaly centered at Τ * = 1.5 K. Our inelastic neutron scattering measurements on Er 2 …

A table-top PXI based low-field spectrometer for solution dynamic nuclear polarization

October 4, 2017
Author(s)
Joshua R. Biller, Karl F. Stupic, John M. Moreland
… The main purpose of the instrument is for study of 1 H polarization enhancements in solution through the … transition. The solenoid for detection of the enhanced 1 H signal at 288 kHz was constructed with Litz wire. The largest observed 1 H enhancements (ε) at 6.7 mT for 14 N‐CTPO radical in air saturated aqueous solution was ε~65. …

Robust Upward Dispersion of the Neutron Spin Resonance in the Heavy Fermion Superconductor Ce 1-x Yb x CoIn 5

September 28, 2016
Author(s)
Yu Song, John Van Dyke, I. K. Lum, B. D. White, L. Shu, A. Schneidewind, Petr Cermak, Yiming Qiu, M. B. Maple, Dirk K. Morr, Pengcheng Dai
… to be at the forefront of modern condensed matter physics [1-5]. In copper oxides [6-8], iron pnictides [9, 10], and … has been associated with a spin exciton due to the d(s +-1 )-wave symmetry of the superconducting gap [7, 12, 13] or … excitation revealed in the superconducting state [14, 15], there is no consensus on its micrscopic origin [2, …

Synchrotron X-Ray Microbeam Diffraction Measurements of Full Elastic Long Range Internal Strain and Stress Tensors in Commercial-Purity Aluminum Processed by Multiple Passes of Equal-Channel Angular Pressing

April 23, 2016
Author(s)
Thien Q. Phan, Lyle E. Levine, I-Fang Lee, Jonathan Z. Tischler, Ruqing Xu, Yi Huang, Terrance G. Langdon, Michael E. Kassner
… of equal-channel angular pressed (ECAP) AA1050 after 1, 2, and 8 passes. This is the first time that full tensors … principal elastic strain directions for the unloaded 1 pass sample for the grain/subgrain interiors align well … LRISs are -0.43 σa for 1 pass, -0.44 σa for 2 pass, and 0.14 σa for the 8 pass sample. These LRISs appear to be larger …

NIST Micronutrients Measurement Quality Assurance Program Winter, Spring, and Fall 1993 Comparability Studies: Results for Round Robins XXVII, XXVIII, and XXIX Fat-Soluble Vitamins and Carotenoids in Human Serum and Round Robin 4 Ascorbic Acid in Human Se

December 19, 2014
Author(s)
Jeanice M. Brown Thomas, David L. Duewer, Kline Margaret, Sam A. Margolis, Willie E. May, Katherine E. Sharpless
… 1993 MMQAP measurement comparability improvement studies: 1) Round Robin XXVII Fat-Soluble Vitamins and Carotenoids in … requested to provide their measurement results by June 14, 1993. The materials for Round Robin XXIX were shipped to …

CTOA Testing of Pipeline Steels Using MDCB Specimens

September 1, 2013
Author(s)
Robert L. Amaro, Jeffrey W. Sowards, Elizabeth S. Drexler, Joseph D. McColskey, Christopher N. McCowan
… displacement rates achieved in our laboratory were near 14 m/s, resulting in crack extension rates near 30 m/s for …

NIST Micronutrients Measurement Quality Assurance Program Winter, Spring, and Fall 1996 Comparability Studies: Results for Round Robin XXXVI, XXXVII, and XXXVIII Fat-Soluble Vitamins and Carotenoids in Human Serum and Round Robin 9 Ascorbic Acid in Human

August 7, 2013
Author(s)
David L. Duewer, Margaret C. Kline, Katherine E. Sharpless, Jeanice M. Brown Thomas, Sam A. Margolis
… 1996 MMQAP measurement comparability improvement studies: 1) Round Robin XXXVI Fat-Soluble Vitamins and Carotenoids in … requested to provide their measurement results by June 14, 1996. The materials for Round Robin XXXVIII were shipped …

Topological Insulator Bi2Se3 Nanowire High Performance Field-Effect Transistors

April 30, 2013
Author(s)
Hao Zhu, Curt A. Richter, Erhai Zhao, John E. Bonevich, William A. Kimes, Hyuk-Jae Jang, Hui Yuan, Abbas Arab, Oleg A. Kirillov, James E. Maslar, D. E. Ioannou, Qiliang Li
… cutoff current below the measurement threshold of 10-14 A, large On/Off current ratio ( 108), and well-saturated, … with effective mobility on the order of 200 cm2V-1s-1 to 1300 cm2V-1s-1, and bulk conduction, with activation energy close to band …

Single bead detection with a NMR micro capillary probe

December 6, 2012
Author(s)
Yoshihiro Nakashima, Michael A. Boss, Stephen E. Russek, John M. Moreland
… spectrometer with sample volumes ranging from 5 nL down to 1 nL. The 1 nL probe had a single shot signal-to-noise ratio (SNR) for … of a 1 υm magnetite/polystyrene bead (m = 2 × 10 -14 Α m 2 ) with an estimated experimental SNR of 30. …

Erratum: Scintillation time dependence and pulse shape discrimination in liquid argon

March 2, 2010
Author(s)
W. H. Lippincott, Kevin Coakley, D. Gastler, A. Hime, E. Kearns, D. N. McKinsey, J. A. Nikkel, L.C. Stonehill
… from the wrong photoelectron bin (the index l in Eqs. (14) and (15) did not match the observed signal size of the … the prompt fraction method, but only by a factor of 1.5 to 3 instead of the order of magnitude stated previously. … With this binning, the ERC from the multibin method is now 1.7 × 10−6 between 55 keVr and 110 keVr (2 contamination …

Dosimetry of Beta-Ray Opthalmic Applicators: Comparison of Different Measurement Methods

October 16, 2008
Author(s)
Christopher G. Soares, S Vynckier, H Jarvinen, W G. Cross, J Hokkanen, P Sipila, D Fluhs, B Schaeken, F A. Mourtada, G A. Bass, T T. Williams
… Comparisons were made of absolute dosimetry determined at 1 mm from the source surface in water or water-equivalent … consistent absolute dosimetry results at the level of 10-14% (one standard deviation) depending on the source. For …

Radioanalytical Emergency Response Exercise

October 16, 2008
Author(s)
Kenneth G. Inn, Iisa Outola, S Nour, Hiromu Kurosaki, L Albin, A Berne
… as follows: 3 - 100 percent for gamma-ray measurements, 1 - 18 percent for gross alpha measurements, 3 - 17 percent for gross beta measurements, and 14 - 21 percent for radioisotopic results. …

Green Fluorescent Protein in Inertially Injected Aqueous Nanodroplets

January 30, 2008
Author(s)
Jianyong Tang, Ana Jofre, Geoffrey Lowman, Rani Kishore, Joseph E. Reiner, Kristian Helmerson, Lori S. Goldner, M E. Greene
… rotational diffusion time was determined to be 13.8 ( 0.1 ns at 3 µM and 14.0 ( 0.2 ns at 10 µM. In hydrosomes, the mean rotational … diffusion time was similar and determined to be 12.6 ( 1.0 ns at 3 µM and 15.5 ( 1.6 ns at 10 µM. We conclude that …
Displaying 926 - 950 of 1415
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