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You searched on: Author: weston tew

Displaying records 31 to 40 of 59 records.
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31. Double Anomalous Peak in the Heat Capacity Just Below the Triple Point of Staurated e-H^d2^ With FeO(OH)^u1
Published: 1/1/2005
Authors: T Nakano, Weston Leo Tew, O Tamura, H Sakurai
Abstract: The heat capacity of e-Hd2 with powder ofFeO(OH) used as a catalyst for ortho-para equilibration has been investigated using sealed cells fabricated at the National Institute of Standards and Technology and at the National Metrology Institute of Japa ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=830908

32. CCT Key Comparison No 1 (CCT-K1): Realisations of the ITS-90, 0.65 K to 24.5561 K, Using Rhodium-Iron Resistance Thermometers
Published: 6/1/2004
Authors: R L Rusby, Christopher W Meyer, Weston Leo Tew, D I Head, K D Hill, O Tamura, P A. de Groot, B Fellmuth, A Storm, A Peruzzi, J Engert, D N Astrov, Y Dedikov, G A Kytin
Abstract: At its meeting in 1996 the CCT initiated five Key Comparisons to test the equivalence of realisations of the ITS-90 between National Measurement Institutes. CCT-K1 covers the temperature range from 0.65 K to 24.5561 K, in which the ITS-90 is defined ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=830884

33. Johnson Noise Thermometry Using a Quantum Voltage Noise Source for Calibration
Published: 6/1/2004
Authors: Sae Woo Nam, Samuel Paul Benz, Paul David Dresselhaus, Weston Leo Tew, D. R White, John M. Martinis
Abstract: We describe our progress towards a high-precision measurement of temperature using Johnson noise. Using a Quantized Voltage Noise Source (QVNS) based on the Josephson effect as a calibrated noise source, we have been able to measure the gallium and w ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=31626

34. Johnson Noise Thermometry Measurements Using a Quantized Voltage Noise Source for Calibration
Published: 4/1/2003
Authors: Sae Woo Nam, Samuel Paul Benz, Paul David Dresselhaus, Weston Leo Tew, D. R White, John M. Martinis
Abstract: We describe a new approach to Johnson Noise Thermometry(JNT) that takes advantage of recent advances in Josephson voltage standards and digital signal processing techniques. Currently, high-precision thermometry using Johnson noise is limited by the ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=30118

35. A ratiometric method for Johnson noise thermometry using a quantized voltage noise source
Published: 1/1/2003
Authors: Sae Woo Nam, Samuel Paul Benz, John M. Martinis, Paul David Dresselhaus, Weston Leo Tew, D. R White
Abstract: Johnson Noise Thermometry (JNT) involves the measurement of the statistical variance of a fluctuating voltage across a resistor in thermal equilibrium. Modern digital techniques make it now possible to perform many functions required for JNT in highl ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=30325

36. Recent Results of NIST Realizations of the ITS-90 Below 84 K
Published: 1/1/2003
Authors: Weston Leo Tew, Christopher W Meyer
Abstract: The results at NIST of realizations and comparisons of the ITS-90 below 84 K are presented. The 3He and 4He vapor pressure scales (0.65 K to 5.0 K), and the interpolating constant volume gas thermometer (ICVGT) scale (5.0 K to 24.556 K) as realized f ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=830804

37. The NIST Low Temperature ITS-90 Realization and Calibration Facilities
Published: 10/1/2002
Authors: Christopher W Meyer, Weston Leo Tew
Abstract: Two facilities have been constructed at NIST for realizing and maintaining the ITS-90 below 84 K. The first facility is an integrated low temperature realization system that realizes the ITS-90 below 84 K in its entirety and which we refer to as the ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=830798

38. A New Approach to Johnson Noise Thermometry Using a Quantum Voltage Noise Source for Calibration
Published: 6/1/2002
Authors: Sae Woo Nam, Samuel Paul Benz, Paul David Dresselhaus, Weston Leo Tew, D. R White, John M. Martinis
Abstract: We describe a new approach to Johnson Noise Thermometry (JNT) that addresses certain limitations found in the conventional approach. The concept takes advantage of recent advances in digital synthesis and signal processing techniques together with ad ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=1083

39. A New Approach to Johnson Noise Thermometry Using a Josephson Quantized Voltage Source for Calibration
Published: 4/1/2002
Authors: Samuel Paul Benz, John M Martinis, Sae Woo Nam, Weston Leo Tew, Douglas R White
Abstract: We describe a new approach to Johnson Noise Thermometry (JNT) that addresses certain limitations found in the conventional approach. The concept takes advantage of recent advances in digital synthesis and signal processing techniques together with a ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=830743

40. A New Approach to Johnson Noise Thermometry using a Josephson Quantized Voltage Source
Published: 4/1/2002
Authors: Samuel Paul Benz, John M. Martinis, Sae Woo Nam, Weston Leo Tew, D. R White
Abstract: We describe a new approach to Johnson Noise Thermometry (JNT) that addresses certain limitations found in the conventional approach. The concept takes advantage of recent advances in digital synthesis and signal processing techniques together with ad ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=30773



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