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.
Hiromu Kurosaki, Robert Radford, James J. Filliben, Kenneth G. Inn
This paper describes statistical experimental design approach of identifying sources of Pu contamination throughout analysis of shellfish at the National
U I. Safronova, I Murakami, T Kato, D Kato, Y Ralchenko
Energy levels, radiative transition probabilities, and autoionization rates for C-like oxygen (O$^2+}$) including $1s^22s^22pnl$, $1s^22s2p^2nl$, and $1s^22p
Near-field scanning optical microscopy (NSOM) is being studied to achieve optical resolution much better than the diffraction limit. Improved resolution is
Howard W. Yoon, Charles E. Gibson, V B. Khromchenko, George P. Eppeldauer
For the measurements of radiance temperatures in the range from 150 ?C to 1000 ?C, low uncertainties in the temperature measurements can be achieved by using
The numerical solution of most problems in theoretical chemistry involve either the use of a basis set expansion (spectral method) or a numerical grid. For many
An approach to screening a core hole s potential in solids for purposes such as theoretical near-edge spectrum calculations is developed. In this approach, the
Superconducting quantum circuits, fabricated with multiple layers, are proposed to implement perfect quantum state transfer between nodes of a hypercube network
Preparing many body entangled states efficiently using available interactions is a challenging task. One solution may be to couple a system collectively with a
Radioanalytical performance testing programs provide radioassay laboratories, regulators and the public performance-based evidence that measurement capabilities
Recently, Meyer and Wallach [D.A. Meyer and N.R. Wallach (2002), J. of Math. Phys., 43, pp. 4273] proposed a measure of multi-qubit entanglement that is a
We have measured the temperature dependence of the superconductive critical magnetic field of several samples of beryllium from three different sources. The
Recently reported micro-ring resonator filters have demonstrated their compactness and signal processing functions. These features are attractive for large
J M. Soto-Crespo, N N. Akhmediev, B C. Collings, S T. Cundiff, K Bergman, W H. Knox
Stable polarization-locked temporal vector solitons are found in a saturable absorber modelocked fiber laser with weak cavity birefringence. The system is
Measurements of wavelengths to high accuracy with a 10.7-m grazing-incidence spectrograph using phosphor storage image plates were carried out. The spectra were
E Parra, I Alexeev, J Fan, K Kim, S J. McNaught, H M. Milchberg
Measurements are presented of X-ray (>1.5 keV) and extreme ultraviolet (EUV, 8 = 2 - 44 nm) emission from Argon and Krypton supersonic gas jets at room (T = 300
Observed spectral lines of neutral boron are critically compiled. Fromselected best measurements, an improved and extended set of energy levels isderived for
Gillian Nave, Zhigang Li, Craig J. Sansonetti, Ulf Griesmann, Alexander Fried
We describe our program to measure branching fractions of Fe II in the vacuum ultraviolet. Branching ratios above 1400 are measured using Fourier transform
F Bovino, A Colla, G Castagnoli, Stefania Castelletto, Ivo P. Degiovanni, M L. Rastello
We experimentally implemented an eavesdropping attack against the Ekert protocol for quantum key distribution based on the Wigner inequality. We demonstrate a
Konrad Lehnert, B A. Turek, K Bladh, L F. Spietz, D Gunnarsson, P Delsing
We measure the average charge on a single-electron box, with an accuracy of 10 -3 e as a function of an externally applied potential. At this accuracy, we
Nonresonant four-wave mixing in rarefied gases in which the nonlinearity arises from microscopic velocity perturbations induced by electrostriction has been
Poly(methyl-methacrylate) (PMMA) thin films were spun cast on silicon and exposed to a 30 nm half-pitch EUV interference pattern. The sample was imaged by
We study the stability of Bose-Einstein condensates with superfluid currents in a one-dimensional periodic potential. By using the Kronig-Penney model, the
Optical second harmonic generation Is very sensitive to surfaces or interfaces if the bulk material is inversion symmetric. We present the resultsof second
Howard W. Yoon, Charles E. Gibson, V B. Khromchenko
The National Institute of Standards and Technology (NIST) has initiated a project on novel high-temperature fixed points by use of metal (carbide)-carbon
Photoscoustic spectroscopy in room-temperature H 2O/HOD/D 2O cells has been used to probe the 3v OH and 4v OH overtone bands in HOD via excitation with a single
The dosimetry of intravascular brachytherapy sources is quite difficult due to the small size of the sources and the close proximity at which measurements are
Motivated by a recent experiment by Zelevinsky et al. [Phys. Rev. Lett. 96, 203201], we present the theory for photoassociation and optical Feshbach resonances
S T. Cundiff, B C. Collins, N N. Akhmediev, J M. Soto-Crespo, K Bergman, W H. Knox
We observe the formation of polarization-locked vector solitons in a modelocked fiber laser. Temporal vector solitons contain components along both principal
C H. Russell, Andrey Guber, K Kolodziejczak, M Joy, C A. MacDonald, W M. Gibson
High-energy x-ray spectrometry from astronomical sources is difficult due to low flux rates and high background. Polycapillary X-ray optics can be used to
B C. Collings, S T. Cundiff, N N. Akhmediev, J M. Soto-Crespo, K Bergman, W H. Knox
We experimentally observe polarization-locked vector solitons in a passively modelocked fiber laser. The vector soliton pulse is composed of components along