Ionizing radiation metrology

News and Updates

19th International Workshop on Low Temperature Detectors (LTD19)

July 29, 2021

The 19th International Workshop on Low Temperature Detectors (LTD19) was an opportunity for researchers from around the world to exchange information about the

EBIT’s Improved X-ray Vision Promises Astronomical Insights

April 25, 2019

Look at an astronomical marvel like the Cat’s Eye Nebula at right, with an average gas temperature about twice as hot as the surface of the Sun. It seems

Photonic Radiation Sensors Survive Huge Doses Undamaged

November 27, 2018

Researchers at the National Institute of Standards and Technology (NIST) have published landmark test results that suggest a promising class of sensors can be

Projects and Programs

Medical (Archive): Small-field Therapy Dosimetry Studies Using Alanine/EPR

Completed

Due to overlap with the Uniformed Services University of the Health Sciences (USUHS) in missions, scientific interests, expertise, and instrumental requirements

Radioanalytical Metrology

Ongoing

Basic Metrology: Dose/Dose-Rate Effects in Alanine Dosimetry

Ongoing

Check standards are used by the NIST Radiation Physics Division to monitor the performance of the alanine dosimetry system that is central to its high-dose

Multiscale structure and dynamics in advanced technological materials

Ongoing

This project develops and applies metrologies and standards for characterizing microstructure and dynamics in advanced functional materials of technological

Publications

Liquid scintillation efficiencies, gamma-ray emission intensities, and half-life for Gd-153

November 9, 2023

Author(s)

Denis E. Bergeron, Jeffrey T. Cessna, Ryan P. Fitzgerald, Gulakhshan Hamad, Lizbeth Laureano-Perez, Leticia Pibida, Brian E. Zimmerman

Gadolinium-153 was standardized for activity by live-timed anticoincidence counting and an ampoule was submitted to the international reference system (SIR)

Comparison of Calibration coefficients for Vinten Ionization Chamber Simulated Using Four Monte Carlo Methods

October 17, 2023

Author(s)

Brittany Broder, Denis E. Bergeron, Ryan P. Fitzgerald, Brian E. Zimmerman

The Vinten 671 ionization chamber (VIC) was modelled using four Monte Carlo (MC) programs: EGS++, EGSnrc, Penelope, and TOPAS. VICs with well-characterized

The international reference system for beta-particle emitting radionuclides: Validation through the pilot study CCRI(II)-P1.Co-60

July 26, 2023

Author(s)

Romain Coulon, Denis E. Bergeron, Jeffrey T. Cessna, Ryan P. Fitzgerald, Lizbeth Laureano-Perez, Leticia Pibida, International Collaboration

Influence of Fluorescent Dopants on the Vat Photopolymerization of Acrylate-based Plastic Scintillators

July 3, 2023

Author(s)

Thomas Kolibaba, Jason Killgore, Caleb Chandler, Dominique Porcincula, Michael Ford, Benjamin Fein-Ashley, Jason Brodsky, Alan Sellinger

Plastic scintillators, a class of solid-state materials used for radiation detection, were additively manufactured with vat photopolymerization. The

Tools and Instruments

X-ray Backscatter Systems

X-ray backscatter systems are used for the screening of personnel for hidden weapons and other contraband. Unlike conventional radiographic x-ray systems