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You searched on: Author: Robert Berg

Displaying records 1 to 10 of 53 records.
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1. Apparatus to measure the vapor pressure of slowly decomposing compounds from 1 Pa to 10^5 Pa
Published: 11/17/2015
Author: Robert F Berg
Abstract: This article describes an apparatus and method for measuring vapor pressures in the range from 1 Pa to 10^5 Pa. Its three distinctive elements are: (1) the static pressure measurements were made with only a small temperature difference between the va ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=919017

2. Time dependence in ,staticŠ measurements of vapor pressure
Published: 11/17/2015
Author: Robert F Berg
Abstract: The static method for measuring vapor pressure assumes that the sample is pure and that its temperature is steady and uniform. In practice, the measured pressure may be time dependent due to evaporative cooling after pumping on the sample, transpirat ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=919018

3. Thermally stable thin-film filters for high-power extreme-ultraviolet applications
Published: 11/12/2015
Authors: Charles S Tarrio, Robert F Berg, Thomas B Lucatorto, Bruce Lairson, Heidi Lopez, Travis Ayers
Abstract: We investigated several types of thin-film filters for high intensity work in the extreme-ultraviolet (EUV) spectral range. In our application, with a peak EUV intensity of 2.7 W cm-2, Ni-mesh-backed Zr filters have a typical lifetime of 20 hours, a ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=919314

4. NIST calibration services for spinning rotor gauge calibrations
Series: Special Publication (NIST SP)
Report Number: 250-93
Published: 5/13/2015
Authors: Robert F Berg, James A Fedchak
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=917220

5. Viscosity-ratio measurements with capillary viscometers
Published: 5/20/2014
Authors: Robert F Berg, Eric F. May, Michael R Moldover
Abstract: Viscosity-ratio measurements made with capillary viscometers exploit the accurate values of the viscosity of helium resulting from ab initio calculations. Accurate values of the argon-to-helium viscosity ratio are now used for primary acoustic thermo ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=914155

6. Hydrogen traps in the outgassing model of a stainless steel vacuum chamber
Published: 3/31/2014
Author: Robert F Berg
Abstract: This article describes a model for hydrogen outgassing into a stainless steel vacuum chamber. It accounts for the geometry of the chamber components, the hydrogen dissolved in those components, and the processes of diffusion, recombination, and trapp ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=914938

7. Constant pressure primary flow standard for gas flows from 0.01 cm^u3^/min to 100 cm^u3^/min (10^u-8^ mol/s to 10^u-5^ mol/s)
Published: 12/17/2013
Authors: Robert F Berg, Gooding Timothy, Robert Edward Vest
Abstract: We describe a flow meter for gas flows in the range from 0.01 sccm to 100 sccm with a relative standard uncertainty of 0.03 % at 1 sccm. (1 sccm ≈ 1 cm3/min of an ideal gas at 101325 Pa and 0 C ≈ 0.7 mol/s.) The flow meter calibrates a se ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=914154

8. Viscosity-ratio measurements with capillary viscometers
Published: 11/27/2013
Authors: Robert F Berg, Eric F. May, Michael R Moldover
Abstract: Viscosity-ratio measurements made with capillary viscometers exploit the accurate values of the viscosity of helium calculated ab initio. Accurate values of the argon-to-helium viscosity ratio are now used for primary acoustic gas thermometry and for ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=914936

9. Recommended viscosities of 11 dilute gases at 25¿°C
Published: 12/13/2012
Authors: Robert F Berg, Michael R Moldover
Abstract: Commercially manufactured meters that measure the flow of a process gas are often calibrated with a known flow of a surrogate gas. This requires an accurate model of the flow meter and accurate values of the relevant thermophysical properties for bo ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911784

10. Recommended vapor pressure and thermophysical data for ferrocene
Published: 8/14/2012
Authors: Michal Fulem, Kvetoslav Ruzicka, Marisa A.A. Rocha, Luis M.N.B.F. Santos, Robert F Berg
Abstract: Recommended vapor pressure data for ferrocene (CAS Registry Number: 102-54-5) in the temperature range from 242 to 447 K were developed by the simultaneous correlation of critically assessed vapor pressures, heat capacities of the crystalline phase a ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=911175



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  • SP 250-XX: Calibration Services
  • SP 260-XX: Standard Reference Materials
  • SP 300-XX: Precision Measurement and Calibration
  • SP 400-XX: Semiconductor Measurement Technology
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  • SP 823-XX: Integrated Services Digital Network Series