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Physics Programs & Projects

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Cold-Atom Devices
Last Updated Date: 08/18/2015

The cooling of atoms to microkelvin temperatures using lasers is currently enabling a new generation of precision instruments that take advantage … more

Last Updated Date: 08/18/2015

The NIST Thermodynamic Metrology Group (TMG) provides critical research into pressure measurement capabilities improving uncertainties in user … more

Reactivity and chaos in collisions of Atoms and Molecules
Last Updated Date: 08/18/2015

Collisions and reactions between atoms and molecules are fundamental to many parts of physics and chemistry. They control, for example, the rate … more

Quantum Many-Body Physics, Quantum Optics, and Quantum Information
Last Updated Date: 08/18/2015

The main long-term goals of our theoretical research group are to understand and control large interacting quantum systems, as well as to design … more

Vapor Cell Devices
Last Updated Date: 08/18/2015

We are developing microfabricated high-performance atomic magnetometers for magnetic anomaly detection, nuclear magnetic resonance and biomagnetics. more

Active Interrogation Standards
Last Updated Date: 08/18/2015

Active interrogation involves directing nuclear radiation into a closed container and measuring secondary radiations to gain information about the … more

NIST-on-a-Chip in the ADI Group
Last Updated Date: 08/18/2015

We are developing core technology tools to enable chip-scale standards that realize a broad range of base and derived SI units in compact, … more

Air Speed Metrology
Last Updated Date: 08/18/2015

NIST’s versatile wind tunnel is used to calibrate customers’ air speed sensors and to conduct research on the design of novel anemometers, the … more

Support of the Navy Dosimetry Program
Last Updated Date: 08/18/2015

The U.S. Navy uses thermoluminescent dosimeters (TLDs) to monitor personnel for radiation exposure.

Hyperspectral Microscopy
Last Updated Date: 08/18/2015

Hyperspectral imagery (HSI) microscopy allows for vegetation and geologic material to be examined at the sub-centimeter spatial scale.

Pushing and Understanding the Limits of Spin-Exchange Optical Pumping of He-3
Last Updated Date: 08/17/2015

Neutron spin filters based on polarized 3He rely on the strong spin dependence of the absorption of neutrons by 3He gas.

X-ray Detection with Large Area Avalanche Photodiodes for the Neutron Radiative Decay Experiment
Last Updated Date: 08/17/2015

Operation of the second neutron radiative decay experiment has been completed. In this experiment we observed the emission of photons that … more

Californium Neutron Irradiation Facility
Last Updated Date: 08/17/2015

NIST maintains the Californium Neutron Irradiation Facility (CNIF), which is an exposure facility providing fast neutrons for irradiations … more

Precision Measurement of the Branching Ratio and Energy Spectrum of Radiative Neutron Decay
Last Updated Date: 08/17/2015

Neutron beta-decay is typically considered as a three-body process, but it is always accompanied by inner-bremsstrahlung soft photons, n → e − + p … more

Reflectance Measurements of Human Skin
Last Updated Date: 08/17/2015

The purpose of this human subjects study is to collect high-quality measurements of the reflectance spectrum of human skin and assess the … more

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