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Radiation Physics Programs & Projects

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Quantum Sensors
Last Updated Date: 10/13/2015

The Quantum Sensors Project develops sensors based on quantum phenomena for spectroscopy, imaging, and other precision measurements for … more

Radioactivity Standard Reference Material Program
Last Updated Date: 09/16/2015

The Standard Reference Materials Program of the National Institute of Standards and Technology (NIST) provides science, industry, and government … more

Calibration of Low-Energy Photon Brachytherapy Sources
Last Updated Date: 08/31/2015

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

National Air-Kerma Standard for Electronic Brachytherapy
Last Updated Date: 08/31/2015

The Dosimetry Group has developed a new facility for the calibration of the Xoft miniature x-ray source, which provides low-energy x-rays (< 50 … more

Calibration of Beta-Particle Sources and Instruments for Radiation Protection
Last Updated Date: 08/31/2015

A calibration service for protection-level beta-particle sources and instrumentation has been in place at NIST for several years.

Technetium-99m Primary Standardization and International Comparison
Last Updated Date: 08/31/2015

Technetium-99m ( 99m Tc) is used in two-thirds of all diagnostic nuclear medicine procedures in the United States.

New Reference Standards for Digital Mammography
Last Updated Date: 08/31/2015

Reference radiation beams using a tungsten target and silver, rhodium, molybdenum and aluminum filters at 20 kVp to 50 kVp were developed to model … more

Alpha-gamma Counting for High Accuracy Fluence Measurement
Last Updated Date: 08/31/2015

The Alpha-Gamma device is a totally-absorbing neutron detector that has been used to measure the absolute neutron fluence of a cold, monoenergetic … more

New Standardization of Ra-228
Last Updated Date: 08/26/2015

Measurements of radium isotopes in the naturally-occurring radioactive decay chains (i.e., 235 U, 238 U, and 232 Th) are exceedingly important for … more

Neutron Device Calibrations
Last Updated Date: 08/25/2015

NIST provides the national reference for the calibration of neutron radiation detectors and for neutron personnel dosimeters.  more

Lyman-Alpha Neutron Detector (LAND)
Last Updated Date: 08/25/2015

The well-known interaction of low-energy neutrons and 3 He produces a proton and a triton with 764 keV of kinetic energy shared between the two … more

Evolution of Image Spatial Resolution
Last Updated Date: 08/25/2015

Measuring the through-plane water content in a hydrogen fuel cell is critical to understanding this complicated heat and mass transport … more

Quantum Dot coated CMOS CID arrays for the UV and VUV
Last Updated Date: 08/25/2015

A technique has been developed for coating commercial off the shelf (COTS) detector arrays with a thin, uniform layer of quantum dots. The quantum … more

Advanced Neutron Imaging Facility
Last Updated Date: 08/25/2015

The NIST Neutron Imaging Facility (NNIF) at the NIST Center for Neutron Research .

Neutron Imaging of Lithium and Alkaline Batteries
Last Updated Date: 08/25/2015

A common topic in energy systems is the need for in situ measurement of the mass transport of light ion species such as hydrogen or lithium.   … more

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