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NIST Authors in Bold

Displaying 1401 - 1425 of 2521

Technical Note on Unexpected Bias in NIST 4p Ionization Chamber Measurements

April 4, 2012
Author(s)
Michael P. Unterweger, Ryan P. Fitzgerald
The NIST 4π pressurized ionization chamber “A” (PIC “A”) has been the mainstay for secondary calibrations of liquid and gaseous gamma-ray emitting sources for the last 40-45 years. It has also been the main instrument used to measure the half-lives of

OASIS Collaborative Energy Standards, Facilities, and ZigBee Smart Energy

February 1, 2012
Author(s)
David G. Holmberg, William Cox, Don Sturek
The enterprise integration-style interfaces and information models in the Organization for the Advancement of Structured Information Systems (OASIS) collaborative energy standards are designed to address information exchange across the smart grid. This

Impact Testing - Yesterday and Today

November 13, 2011
Author(s)
Enrico Lucon, Christopher N. McCowan
The Charpy impact test is a standardized high strain rate mechanical test which determines the amount of energy absorbed by a material during impact fracture. This test is widely applied in industry, since it is easy to prepare and conduct, and results can

Single-qubit-gate error below 10 -4 in a trapped ion

September 14, 2011
Author(s)
Kenton R. Brown, Andrew C. Wilson, Yves Colombe, Christian Ospeklaus, Adam M. Meier, Emanuel H. Knill, Dietrich G. Leibfried, David J. Wineland
… with microwaves applied to the trap electrodes [7]. This demonstration of errors significantly below the …

Recent developments in the NIST Atomic Databases

May 11, 2011
Author(s)
Alexander Kramida
New versions of the NIST Atomic Spectra Database (ASD, v. 4.0) and three bibliographic databases (Atomic Energy Levels and Spectra, v. 2.0, Atomic Transition Probabilities, v. 9.0, and Atomic Line Broadening and Shapes, v. 3.0) have recently been released

Modified Predictive Formula for the Electron Stopping Power

March 19, 2008
Author(s)
Aleksander Jablonski, S Tanuma, Cedric J. Powell
… mean deviation between predicted and calculated SPs was 7.25 %, larger deviations were found for four additional … guanine and InSb, showed average deviations of 16.2 % and 20.1 %, respectively. The new SP formula is expected to be …

Thermodynamic Interactions in Double-Network Hydrogels

March 11, 2008
Author(s)
Taiki Tominaga, Vijay Tirumala, Sanghun Lee, Eric K. Lin, Jian P. Gong, Wen-Li Wu
… toughness approaching that of articular cartilage ( 20 MPa).As a first step to elucidate the molecular origin …

Nanowire placement with ink jet heads

September 16, 2007
Author(s)
Kristine A. Bertness, Christopher M. Dodson, Paul T. Blanchard, Norman Sanford, Ross N. Mills
… ranging from 70 to 300 nm and lengths from 5 υm to 20 υm. They were dispersed in alcohol-water solutions for …

Broaband THz aqueous blackbody calibration source

April 9, 2007
Author(s)
Charles Dietlein, Zoya Popovic, Erich N. Grossman
We describe a broadband calibration source for the millimeter-wave to terahertz (THz) frequency range, the Aqueous Blackbody Calibration (ABC) source. The blackbody in this design is a body of water, which is extremely absorptive at these frequencies, held
Displaying 1401 - 1425 of 2521
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