An official website of the United States government
Here’s how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
D J. Paterson, T. Han, C Q. Tran, Lawrence T. Hudson, F Serpa, R Deslattes
The course of Electron-Beam Ion Trap (EBIT) experiments depends more and more on precision measurement. To design and test a system of absolute spectroscopy to
This study introduces the idea of the sharpness concept in relationship to the determination of scanning electron microscope (SEM) perfomance. Scanning electron
H Amick, B Sennewald, N C. Pardue, E C. Teague, Brian R. Scace
This paper reports the results of the finite element analysis and in situ testing of a large-scale (4 m x 10 m) pneumatically isolated concrete slab. The slab
We demonstrate a new method of performing the absolute three flat test using reflection symmetries of the surfaces and an algorithm for generating the rotation
O Glembocki, J Tuchman, John A. Dagata, K Ko, S Pang, C Stutz
Photoreflectance has been used to study the electronic properties of (100) GaAs surfaces exposed to a Cl2/Ar plasma generated by an electron cyclotron resonance
A model for scanned probe microscope (SPM) silicon oxidation is presented. The model was derived from a consideration of the space-charge dependence of this
We have shown that it is possible to achieve dense nanostructured alumina, with density + 98% of the theoretical maximum at sintering temperature as low as 1300
R. J. Berry, C J. Ehlers, Donald R. Burgess Jr., Michael R. Zachariah, Marc R. Nyden, M Schwartz
The ab initio G2, G2(MP2), CBS-4 and CBS-Q quantum mechanical protocols and the parameterized BAC-MP4 procedure were used to calculate the enthalpies of
Vyto Babrauskas, Richard Gann, Barbara C. Levin, M Paabo, Richard H. Harris Jr., Richard Peacock, S Yusa
A comprehensive methodology has been developed for obtaining and using smoke toxicity data for fire hazard analysis. This description of the methodology
T Noto, Valeri I. Babushok, Anthony Hamins, Wing Tsang
A numerical study of the inhibition efficiency of halogenated compounds was carried out for C1-C2 hydrocarbon-air laminar premixed flames. The inhibition
Part III of a French language version of **Testing and Modeling of Fresh Concrete Rheology,** NIST Interagency Report NISTIR 6094, February 1998.This report
The industrial demand for sensitive and noninvasive tools with which to measure pressure has spurred the use of optical methods to make these measurements. This
Robert McMichael, Mark D. Stiles, P J. Chen, William F. Egelhoff Jr.
This paper describes ferromagnetic resonance (FMR) and magnetoresistive measurements of thin magnetic films coupled to antiferromagnetic films. First, FMR
In a previous technical feature,2 we described some motives for performing structural dynamic tests and subsequently reviewed some frequency domain techniques
D J. Berkeland, J D. Miller, James C. Bergquist, Wayne M. Itano, David J. Wineland
Micromotion of ions in Paul traps has several adverse effects, including alterations of atomic transition line shapes, significatn second-order Doppler shifts
A simplified ultrasonic immersion technique has been developed to measure leaky surface and bulk waves in solid materials by using specially designed lensless
The International Union for Vacuum Science, Technique and Applications (IUVSTA) has established a workshop programme to provide a forum for intense scientific
This work is one chapter of the 19th NFPA Fire Protection Handbook directed at giving the user simplified methods to estimate quantities used in fire protection
Alexana Roshko, F. J. Stork, David A. Rudman, D. J. Aldrich, P. A. Hotsenpiller
The growth of heteroepitaxial YBa 2Cu 3O 7-δ and TiO 2 thin films has been investigated as a function of deposition rate. film thickness, and deposition