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Radiation Physics Programs & Projects

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ANSI N42.42 Standard
Last Updated Date: 05/14/2015

The purpose of the N42 data format is to facilitate manufacturer-independent transfer of information from radiation measurement instruments for … more

Advanced Neutron Imaging Facility
Last Updated Date: 04/21/2015

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

Absolute Ag108 Characterization Based on Gamma-Gamma Coincident Detection by Two Nai (TI) Detectors
Last Updated Date: 04/02/2015

A two-dimensional analysis of three coincident gamma-rays in 108 Ag m decay, detected by two NaI(Tl) scintillation detectors, allows a direct … more

Applications of Diagnostic X-ray Spectrometers
Last Updated Date: 04/02/2015

The Dosimetry Group designs, fabricates, and calibrates bent-crystal optics and diagnostic spectrometers for customers around the world. more

Synchrotron Radiation-Based Calibrations for Space Weather Prediction
Last Updated Date: 03/24/2015

Orbital ultraviolet and extreme-ultraviolet spectrometers are calibrated on beamline 2, taking advantage of the calculability of synchrotron … more

NIST Lyman-Alpha Neutron Detector (LAND)
Last Updated Date: 03/24/2015

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

Quantum Sensors
Last Updated Date: 12/11/2014

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

Accelerator Facilities
Last Updated Date: 10/09/2014

The Radiation Physics Division's accelerator facilities continue to support a broad range of research efforts in the areas of industrial and … more

Neutron Interferometry with Polarized Neutrons as an Additional Degree of Freedom
Last Updated Date: 07/15/2014

Our goal is to apply Quantum Information Processing techniques to improve neutron interferometry contrast by making our final measurement … more

Evolution of Image Spatial Resolution
Last Updated Date: 12/26/2013

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

New Calibration Service for 14 MeV Neutron Generators
Last Updated Date: 07/30/2013

A new calibration service for 14 MeV neutron generators is being developed.   The calibrations may be done at NIST or at a customer site, by … more

Neutron Device Calibrations
Last Updated Date: 07/30/2013

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

Neutron Cross Section Standards
Last Updated Date: 07/30/2013

NIST continues to be deeply involved with measurements and evaluations of neutron cross section standards.   NIST maintains a limited experimental … more

Calibrated Neutron Sources
Last Updated Date: 07/30/2013

ANSI N42.35 requires 252 Cf neutron sources encapsulated in 1 cm of steel with a fluence of 2x10 4 n/s ±20%. 

Use of Quantum Error Coding in a 4-Blade Neutron Interferometer
Last Updated Date: 07/30/2013

We have designed a new type of neutron interferometer, which will be less sensitive to slow vibrations.

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