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Physics Programs & Projects

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Calibration of Low-Energy Photon Brachytherapy Sources
Last Updated Date: 02/27/2013

Small radioactive "seed" sources used in prostate brachytherapy, containing the radionuclide 103 Pd, 125 I, or 131 Cs, are calibrated in terms of … more

Characterization of Dosimeters Used in Computed Tomography
Last Updated Date: 02/27/2013

In an effort to both reduce and improve the monitoring of radiation dose delivered to patients during computed tomography (CT) procedures, the … more

NIST Work in Support of the Navy Dosimetry Program
Last Updated Date: 02/27/2013

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

Enhanced X-Ray Imaging
Last Updated Date: 02/26/2013

This project pursues enhanced x-ray image acquisition and analysis methods that are applicable to, for example, security and medical applications … more

High-Resolution X-ray Spectroscopy
Last Updated Date: 02/26/2013

We are pursuing a program of x-ray spectroscopy of highly-charged ions and plasmas using custom-designed and constructed curved crystal … more

Remote Sensing Methods for Imaging Dose to Water
Last Updated Date: 02/26/2013

Calorimetry based upon remote sensing of the temperature field in an irradiated volume would offer distinct advantages over the present approach, … more

Photon and Charged Particle Data Center
Last Updated Date: 02/26/2013

The Photon and Charged Particle Data Center has long been an international source of photon and charged particle reference data that have been … more

Traceability for Industrial Irradiator
Last Updated Date: 02/26/2013

U.S. manufacturers have contended for decades that traceability to national standards for industrial irradiation applications is best achieved by … more

Testing of Radiation Detection Systems
Last Updated Date: 12/12/2012

NIST is working together with the Department of Homeland Security (DHS) Domestic Nuclear Detection Office (DNDO) in testing radiation detection … more

NIST Stars
Last Updated Date: 11/16/2012

NIST Stars is an Innovations in Measurement Science project to create a catalog of stars whose top-of-the-atmosphere spectral flux has an SI … more

Spectral irradiance and radiance responsivity calibrations using uniform sources (SIRCUS)
Last Updated Date: 11/16/2012

SIRCUS is a reference facility for the calibration of detectors and radiometers for spectral irradiance responsivity and spectral radiance … more

Infrared optical properties of materials and components
Last Updated Date: 11/15/2012

Accurate measurements of the optical properties of materials in the infrared spectral range play an increasingly important role in the aerospace … more

Color and appearance
Last Updated Date: 10/17/2012

We are developing instrumentation, standards artifacts, and measurement protocols to characterize appearance attributes including color, texture, … more

Surface Plasmon Resonance Imaging of Cells and Extracellular Matrix Proteins
Last Updated Date: 10/10/2012

A critical challenge in cell biology is imaging and quantifying the interactions of cells with their extracellular matrix (ECM) environment, and … more

Chemical/Biochemical Microsensor Science
Last Updated Date: 10/02/2012

The Process Sensing Group at NIST is investigating a range of fundamental and technological issues related to next-generation chemical and … more

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