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.
We show that the phase structure of layered two-dimensional (2D) sine-Gordon systems, which interact via an interlayer coupling, depends on the number of layers...
This article describes the scaling of plane-wave Born cross sections for the excitation of the H2 molecule to four low-lying electronic states (B singlet Sigma...
We present a scheme for the signal extraction for LISA. The underlying principle is demonstrated and an experimental setup for testing thescheme is shown. We...
Instrumental capabilities for both relative and absolute gravity measurements have evolved over the past 40 years to the point where today measurements can be...
Kenneth G. Inn, Iisa Outola, S Nour, Hiromu Kurosaki, L Albin, A Berne
The National Institute of Standards and Technology (NIST Radiochemistry Intercomparison Program) and the Environmental Measurements Laboratory (EML Performance...
We show that a modified Bloch equation for the electronic magnetic moment is necessary when the magnetic moment explicitly contains a diamagnetic contribution...
Silicon-based particles that grow in a silane radio frequency (RF) discharge are studied by light scattering. Average particle size and the corresponding...
The National Institute of Standards and Technology (NIST) seaweed Standard Reference Material (SRM4359) was developed through an intercomparison of 24...
A Browaeys, H H ffnert, C R. McKenzie, S L. Rolston, Kristian Helmerson, William D. Phillips
We have performed experiments using a 3D-Bose-Einstein condensate of sodium atoms in a 1D optical lattice to explore some unusual properties of band-structure...
Changhyun Ryu, Mikkel Andersen, Pierre Clade, Vasant Natarajan, Kristian Helmerson, William D. Phillips
We have observed the persistent flow of Bose-condensed atoms in a toroidal trap. The flow persists without decay for up to 10 s, limited only by experimental...
Kenneth G. Inn, Hiromu Kurosaki, Carole Frechou, Chris Gilligan, Robert Jones, Stephen LaMont, Jeff Leggitt, Chunsheng Li, Keith McCroan, Ronald Swatski
In 1977, the International Committee on Radionuclide Metrology's (ICRM) Low-Level Working Group (LLWG) workshop, a long-term blueprint for a new series of...
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...