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1. The NIST Traceable Reference Material Program for Gas Standards
Series: Special Publication (NIST SP)
Report Number: 260-126 Rev 2013
Topic: Gas Metrology
Published: 2/26/2015
Authors: William David Dorko, Michael E Kelley, Franklin R Guenther
Abstract: A program is described by which the concentration of commercially produced gas mixtures may be related to gaseous primary standards or measurement systems maintained by the National Institute of Standards and Technology (NIST). The gaseous mixtures, ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=903626

2. Investigating Adsorption/Desorption of Carbon Dioxide in Aluminum Compressed Gas Cylinders
Topic: Gas Metrology
Published: 12/18/2014
Authors: Walter R Miller Jr, George C Rhoderick, Franklin R Guenther
Abstract: Between June 2010 and June 2011, the National Institute of Standards and Technology gravimetrically prepared a suite of 20 carbon dioxide [CO2] in air primary standard mixtures [PSMs]. Ambient mole fraction levels were obtained through six levels of ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=916263

3. Microwave Determination of the Volume of a Pressure Vessel
Topic: Gas Metrology
Published: 12/9/2014
Authors: Michael R Moldover, James W Schmidt, Keith A Gillis, James B. Mehl, John D Wright
Abstract: Using microwave techniques that are scalable to very large volumes, we measured the interior volume of a 0.3 m^u3^, commercially-manufactured, pressure vessel with an uncertainty of 0.05 %, as confirmed by independent, more-accurate, gas-expansion me ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=917302

4. ,WeighingŠ a Gas With Microwave and Acoustic Resonances
Topic: Gas Metrology
Published: 12/9/2013
Authors: Keith A Gillis, James B. Mehl, James W Schmidt, Michael R Moldover
Abstract: With calibrations of large flow meters in mind, we established the feasibility of determining the mass {I}M{/I}of argon gas contained within a 0.3 m^u3^ commercially manufactured pressure vessel (,tankŠ) with a relative uncertainty of {I}u{/I}^dr^({I ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=917698

5. Stability Assessment of Gas Mixtures Containing Monoterpenes in Varying Cylinder Materials and Treatments
Topic: Gas Metrology
Published: 5/7/2013
Author: George C Rhoderick
Abstract: Studies of climate change increasingly recognize the diverse influences exerted by monoterpenes in the atmosphere, including roles in particulates, ozone formation and oxidizing potential. Measurements of key monoterpenes suggest atmospheric amount- ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911992

6. Long-term stability of metal-envelope enclosed ionization gauges
Topic: Gas Metrology
Published: 12/1/2012
Authors: James A Fedchak, Dana R Defibaugh
Abstract: Ionization vacuum gauges are used as secondary standards by calibration laboratories and as transfer standards in intercomparisons among metrology laboratories. A quantitative measurement of gauge stability with respect to the gauge calibration fact ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911249

7. Second-order boundary corrections to the radial acoustic eigenvalues for a spherical cavity
Topic: Gas Metrology
Published: 8/17/2012
Author: Keith A Gillis
Abstract: We calculated the eigenvalues of the radially-symmetric acoustic modes of a gas-filled, spherical cavity to order ({delta}^dT^/{I}a{/I})^u2^, where {delta}^dT^ is the thickness of the thermal boundary layer and {I}a{/I} is the radius of the cavity. O ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911620

8. Noble gas viscosities at 25 degrees C
Topic: Gas Metrology
Published: 8/10/2012
Authors: Robert F Berg, William Cody Burton
Abstract: Near 25 C, ab initio calculations of the zero-density viscosity of helium gas eta_He have an uncertainty of approximately 0.001 %, which is 1/40th of the uncertainty of the best measurements. The uncertainties of the published calculations for neon [ ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911234

9. Frequency-stabilized cavity ring-down spectroscopy measurements of carbon dioxide isotope ratios
Topic: Gas Metrology
Published: 5/15/2011
Authors: Joseph Terence Hodges, David A Long, Mitchio Okumura, Charles E Miller
Abstract: Carbon dioxide (CO2) isotopic ratios were measured at 1.6 μm through the use of frequency-stabilized cavity ring-down spectroscopy (FS-CRDS). We report the highest spectrum signal-to-noise ratios to date for CO2 transitions, with values as high ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=907103

10. Stability Assessment of Gas Mixtures Containing Terpenes at Nominal 5 nmol/mol Contained in Treated Aluminum Gas Cylinders
Topic: Gas Metrology
Published: 8/9/2010
Author: George C Rhoderick
Abstract: Studies of climate change increasingly recognize the diverse influences exerted by terpenes (Tp) in the atmosphere, including roles in particulates, ozone formation & their oxidizing potential. Measurements of key Tp suggest atmospheric concentration ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905302



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