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This paper focuses on unresolved or poorly documented issues pertaining to Fresnel's diffraction theory and its various modifications. In Sec. 2 of the paper it
The importance of Lagrange multipliers in variational atomic structure calculations is discussed. Though in some instances they may not affect the energy
Wolfgang L. Wiese, Jeffrey R. Fuhr, Daniel E. Kelleher, Larissa Podobedova
At the National Institute of Standards and Technology (NIST), we are continuing our critical evaluation and compilation work on atomic transition probabilities
The energy levels and excitation spectra of multi-shell nanocrystals composed of ZnS and CdS layers are investigated. The calculations are performed both in the
Y Ralchenko, R Clark, D Humbert, David R. Schultz, T Kato, Y J. Rhee
Accelerated development of the Internet technologies, including those relevant to the atomic and molecular physics, poses new requirements for the proper
Spectra of neon-filled hollow cathode discharge lamps were observed by means of high-resolution Fourier-transform spectroscopy (FTS) covering the region from
A systematic study of measurement performance is described for several different types of transducers including capacitance diaphragm gauges (CDGs), quartz
Several reference materials and associated reference value have been recommended for the purposes of calibration and/or validation of differential scanning
Forensic evidential evaluations often require comparison of questioned and known measurements to determine if they have a common origin. Visual display of this
Recommendations are given for Problem 11(c): 2-propanol density at problem conditions: (1) 0.1 MPa. 298.15 K and (2) 5 MPa, 400 K. The recommendedvalues and
To evaluate which models of x-ray emission and ionization cross section give the most accurate results when applied to quantitative x-ray emission measurements
We employ periodic density functional calculations to explore the effect of cyclic tensile loading on the behavior of alumina in the threshold region of crack
David Travis Gallagher, C Stover, J Moses, D Charlton, E Steinberg, L Arnowitz
Current rapid advances in the genomic and biochemical sciences provide impetus for finding improved ways of crystallizing proteins for structure determination
William R. Kelly, Bruce S. MacDonald, Stefan D. Leigh
A procedure is presented whereby, the fossil fuel SRM user community could mix SRMs in different proportions and thereby, produce in their laboratory CRMs for
George A. Klouda, James J. Filliben, H J. Parish, J C. Chow, J Watson, R Cary
Reference Material (RM) 8785 Air Particulate Matter on Filter Media is intended primarily for use in the evaluation of analytical methods used to characterize
Yi-Lei Zhao, Allan H. Laufer, Joshua Halpern, Askar Fahr
Photodissociation channels and the final product yields from the 193 nm photolysis of propene-h6 (CH2=CHCH3) and propene-d6 (CD2=CDCD3) have been investigated
Anzor I. Mikaia, Stephen E. Stein, Vladimir G. Zaikin, D Zhu
The methods used to build a high quality, comprehensive reference library of positive ion EI mass spectra will be discussed. A description of the development of
William R. Kelly, Bruce S. MacDonald, William F. Guthrie
A general mathematical formulation for the method of standard additions is presented that has universal applicability. It is based on gravimetry rather than
V S. Gowda, Tsyh Tyan Yeh, Pedro I. Espina, N Yende
A static-gravimetric liquid flow calibration facility is under construction at the NIST Gaithersburg Campus. The facility is designed to calibrate flow meters
Richard M. Lindstrom, Rolf L. Zeisler, Elizabeth A. Mackey, P J. Liposky, Rachel S. Popelka-Filcoff, Robert E. Williams
Elementary activation analysis assumes that the reaction rate is proportional to the number of atoms of analyte present in the sample. On close examination
The deposition of carbon during hydrocarbon pyrolysis is part of many industrial processes. The rate and nature of deposition depend, in part, on the gas-phase
The sizes of explosives particles in fingerprint residues produced from C-4 and Semtex-1A were investigated with respect to a fragmentation model. Particles
The effect of growth modifiers on the morphology of zinc oxide (ZnO) nanorods crystallized from solution is characterized. During hydrolysis of zinc nitrate at