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The National Institute of Standards and Technology (NIST), Radioactivity Group, and the National Physical Laboratory (NPL) of the UK, exchanged 210 Pb solution
Members of the Radioactivity Group (RG) have been actively collaborating with statisticians in the NIST Statistical Engineering Division to identify new tools
Measurements of radium isotopes in the naturally-occurring radioactive decay chains (i.e., 235 U, 238 U, and 232 Th) are exceedingly important for various
Ni-63 is of considerable interest and importance in radionuclidic metrology as well as for radiation protection surveillance around nuclear facilities.
Collaboration on investigating the thermodynamics of radon binding with a new and novel class of cryptophane molecules was completed with researchers from the
A new standard solution of 243Am, an important radionuclide for the US and international environmental-measurements communities, was developed and disseminated
Since the 1950s, the NIST Radioactivity Group has employed standardized 5 mL borosilicate glass ampoules for ionization chamber measurements and high-resolution
Liquid scintillators have been at the heart of radiation measurements at NIST for decades. NIST scientists have pushed the limits of liquid scintillation-based
Standard-sized ampoules for radioactive solution standards have been employed by the National Institute of Standards and Technology (NIST) for the past 70 years
Primary activity standards for radionuclides form the foundation for the many products and services of the Radioactivity Group and serve as ground-truth for
Expanding applications of radioactivity in medicine, energy, and national security demand quantification of complex radionuclide mixtures at uncertainty levels
Precise calibration of short-lived radioactive material is essential for nuclear medicine and power plant applications. To deliver such calibrations on-demand
The Standard Reference Materials Program of the National Institute of Standards and Technology (NIST) provides science, industry, and government with a central
An international measurement comparison for a 99 Tc solution hosted by National Physical Laboratory (NPL) of the UK, (CCRI(II)K-2. 99 Tc comparison) was
All of the plutonium isotopes, which have a very high biotoxicity, are man-made and result from various nuclear activities. Plutonium-241 is a very low-energy
Certified Reference Materials (CRMs) are needed to develop and validate method analysis, and also for quality monitoring of established radioanalytical
To establish equivalency of activity standards with national metrology institutes (NMIs) around the world and support their declarations of calibration and
The Radiological Traceability Program (RTP) is a Proficiency Testing (PT) program that establishes traceability for the Radiological and Environmental Sciences
The purpose of the N42 data format is to facilitate manufacturer-independent transfer of information from radiation measurement instruments for use in homeland
The purpose of the IEC 62755 standard N42 data format is to facilitate manufacturer-independent transfer of information from radiation measurement instruments
NIST is a key player in the development of ANSI/IEEE, IEC and Technical Capability standards for the detection of illicit trafficking of radioactive materials