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 Metrology
      Ionizing radiation metrology

	  			
  

	
	News and Updates
        19th International Workshop on Low Temperature Detectors (LTD19)
                        July 29, 2021The 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, 2019Look 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, 2018Researchers at the National Institute of Standards and Technology (NIST) have published landmark test results that suggest a promising class of sensors can be

    

  
  

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  Projects and Programs
        Basic Metrology: Dose/Dose-Rate Effects in Alanine Dosimetry
                  OngoingCheck 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
                  OngoingThis project develops and applies metrologies and standards for characterizing microstructure and dynamics in advanced functional materials of technological
  Basic Metrology: Theoretical Dosimetry and Radiation-Transport Calculations
                  OngoingThe fundamental photon and charged particle interaction data and the radiation transport methods, pioneered and developed at NIST to calculate the penetration
  Photonic Dosimetry
                  OngoingAs part of the NIST on a Chip program, the Photonic Dosimetry project is developing in-situ sub-micrometer ionizing-radiation dosimetry and calorimetry leading

    

  
  

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

  

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

    

  
  

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