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Author: Jolene Splett

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1. Strain and Magnetic-Field Characterization of a Bronze-Route Nb^d3^Sn ITER Wire: Benchmarking of Strain Measurement Facilities at NIST and University of Twente
Published: 6/1/2012
Authors: Najib Cheggour, Arend Nijhuis, H J. G. Krooshoop, Xifeng Lu, Jolene D Splett, Theodore C Stauffer, Loren Frederick Goodrich, Matthew C. Jewell, Arnaud Devred, Y Nabara
Abstract: A benchmarking experiment was conducted to compare strain measurement facilities at the National Institute of Standards and Technology (NIST) and the University of Twente. The critical current of a bronze-route Nb^d3^Sn wire, which was fabricated for ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=909931

2. Density, Speed of Sound, and Viscosity Measurements of Reference Materials for Biofuels
Published: 2/10/2012
Authors: Arno R Laesecke, Tara J Fortin, Jolene D Splett
Abstract: Measurements of density, speed of sound, and viscosity have been carried out on liquid standard reference materials for biofuels as a function of temperature at ambient pressure. The samples included anhydrous and hydrated bioethanol and two biodiese ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=909571

3. Correlation Between the Pressure Dependence of the Critical Temperature and the Reversible Strain Effect on the Critical Current and Pinning Force in Bi^d2^Sr^d2^CaCu^d2^O^d8+x^ Wires
Published: 12/16/2011
Authors: Xifeng Lu, Loren Frederick Goodrich, Daniel Cornelis van der Laan, Jolene D Splett, Najib Cheggour, T G Holesinger, F J Baca
Abstract: Bi^d2^Sr^d2^CaCu^d2^O^d8+x^ round wires are among the most promising high-temperature superconductor candidates for making high-field magnets that operate at fields above 20 Tesla. Owing to the brittle nature of high-temperature superconductors, thei ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=909605

4. Viscosity Measurements of NIST SRM 1617b
Series: OTHER
Published: 12/12/2011
Authors: Arno R Laesecke, Jolene D Splett
Abstract: None
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=910193

5. Method for determining the irreversible strain limit of Nb^d3^Sn wires
Published: 6/6/2011
Authors: Loren Frederick Goodrich, Najib Cheggour, Xifeng Lu, Jolene D Splett, Theodore C Stauffer, Bernard J Filla
Abstract: We have defined a rigorous and reliable method for determining the irreversible strain limit of Nb^d3^Sn wires. The critical current ({I}I^dc^{/I}) is measured as a function of applied longitudinal strain ({epsilon}), {I}I^dc^{/I}({epsilon}), at one ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=907701

6. Strain and Magnetization Properties of High Subelement Count Tube-type Nb3Sn Strands
Published: 6/6/2011
Authors: Najib Cheggour, X Peng, E Gregory, M Tomsic, M D Sumption, A. K. Ghosh, Xifeng Lu, Theodore C Stauffer, Loren Frederick Goodrich, Jolene D Splett
Abstract: Abstract,A tubular technique for economical production of Nb3Sn material with large numbers of subelements is being explored by Supergenics I LLC and Hyper Tech Research Inc. The number of subelements was increased to 919 (744 subelements plus 175 Cu ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=907004

7. A Comparison of Methods for Computing the Residual Resistivity Ratio of High-Purity Niobium
Published: 2/17/2011
Authors: Jolene D Splett, Dominic F. (Dominic F.) Vecchia, Loren Frederick Goodrich
Abstract: We compare methods for estimating the residual resistivity ratio (RRR) of high-purity niobium samples and investigate the effects of using different functional models on the final value. RRR is typically defined as the ratio of the electrical resista ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=906197

8. Use of Electronic Calibration Units for Vector-Network-Analyzer Verification
Published: 7/30/2010
Authors: Dylan F Williams, Arkadiusz C. (Arkadiusz) Lewandowski, Denis X LeGolvan, Ronald A Ginley, Chih-Ming Wang, Jolene D Splett
Abstract: We present measurements indicating that electronic calibration units are stable enough to be used in place of mechanical vector-network-analyzer verification artifacts. This enables a new fully automated approach to verifying microwave vector-network ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=903470

9. Influence of Ti and Ta doping on the irreversible strain limit of ternary Nb^d3^Sn superconducting wires made by the restacked-rod process
Published: 4/1/2010
Authors: Najib Cheggour, Loren Frederick Goodrich, Theodore C Stauffer, Jolene D Splett, Xifeng Lu, A. K. Ghosh, G. Ambrosio
Abstract: Nb^d3^Sn superconducting wires made with restacked-rod process (RRP®) were found to have a dramatically improved resilience to axial tensile strain when alloyed with Ti as compared to Ta. Whereas Ta-alloyed Nb^d3^Sn in RRP wires showed permanent dama ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=904331

10. Frequentist coverage properties of uncertainty intervals for weak Poisson signals in the presence of background
Published: 2/3/2010
Authors: Kevin J Coakley, Jolene D Splett, David S Simons
Abstract: We construct uncertainty intervals for weak Poisson signals in the presence of background. We consider the case where a primary experiment yields a realization of the signal plus background, and a second experiment yields a realization of the bac ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=150661



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