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In support of defense programs in remote sensing, NIST maintains the scale for infrared radiant flux by using an Absolute Cryogenic radiometer (ACR) in a low
The Radiation Physics Division's accelerator facilities continue to support a broad range of research efforts in the areas of industrial and medical dosimetry
The NIST Ac-dc2 Difference Project performs leading edge measurement services and research for ac-dc difference measurements and dc voltage metrology. We
The Fluid Metrology Group leads the world in designing and using gas-filled acoustic resonators for measuring the thermodynamic temperature T, the Boltzmann
By measuring the speed of sound in argon gas, we have determined thermodynamic temperature with unprecedented accuracy in the range 0 °C to 552 °C. Our results
The Advanced Dimensional Measurement Systems (ADMS) project provides the measurement science and infrastructure needed by industry to adopt new dimensional
Recent advances in nanofabrication and nanobiotechnology rely on biomacromolecules. In biotechnology, biomacromolecules at nanometer length scales are either
The scope of MRI is expanding with the development of both ultra-high field (14 T) and ultra-low field (0.1 mT) scanners not only for biomedical applications
Research on quantum information (QI) seeks to control and exploit exotic properties of quantum mechanics, and researchers are already generating "unbreakable"
Specialized imaging methods with high spatial resolution are essential for advancing the physical understanding of emergent materials in advanced electronics
NIST's versatile wind tunnel is used to calibrate customers' airspeed sensors and to conduct research on the design of novel anemometers, the responses of
Radiometric and photometric measurements require defining apertures. The accuracy to which these measurements can be accomplished requires minimization of the
Theory is being developed and used to devise methods for preserving and exploiting the quantum behavior of ever-larger systems for metrology, communication, and
We collaborated on tests at the Insitut Laue Langevin (ILL) to study the effects of high flux neutron beams on spin-exchange optical pumping (SEOP). The key
We continue to work improving techniques in fast neutron detection using segmented spectrometers based on the principle of capture-gating. Our approach employs
Neutron detectors based on UV scintillations in xenon gas are under development for a variety of applications. The scintillations are produced with high
The detection of low energy charged particles is essential to high precision fundamental physics experiments, particularly with neutron beta decay. The majority
Spectroradiometers are widely used for acquiring colorimetric, photometric, and radiometric quantities with a single measurement for a variety of applications
The capabilities of many neutron scattering instruments would be greatly enhanced by neutron polarization analyzers that can cover a wide angular range.
Operation of the second neutron radiative decay experiment was completed. In the experiment we observed the emission of photons that accompany neutron beta
The National Institute of Standards and Technology operates two spectral comparator facilities, both of which are used to provide detector calibrations from the
At the heart of nanotechnology is the need to create nanostructures, which are material structures whose dimensions are in the nanometer scale. Typically
To fabricate, measure, and model solid state implementations of atomically precise devices. Develop a robust infrastructure to fabricate prototype few-atom