Physics Programs & Projects | |
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Radionuclide in Soil Reference Materials
Last Updated Date: 06/27/2012 Consequence management of a radiological incident requires rapid information about the nuclides, amount, dispersion, and speciation for the … more
Gamma-ray Spectrometry System
Last Updated Date: 06/27/2012 A new silicon detector for calibration of low energy gamma-ray emitting sources used for nuclear power plants, medical and homeland security … more
Separation and Purification of Ra-228 for SRM 4339B
Last Updated Date: 06/27/2012 The US Environmental Protection Agency (USEPA) maximum contaminant level for combined 226 Ra and 228 Ra in drinking water is 5 picocuries (37 mBq) … more
National Technical Nuclear Forensics CRMs
Last Updated Date: 06/27/2012 The U.S. Department of Homeland Security (DHS) is committed to using cutting-edge technologies and scientific talent in its quest to make America … more
Active Interrogation Standards
Last Updated Date: 06/27/2012 Active interrogation involves directing nuclear radiation into a closed container and measuring secondary radiations to gain information about the … more
The Urgent Requirements for New Radioanalytical CRMs
Last Updated Date: 06/27/2012 A multi-agency workshop was held from 25–27 August 2009, at the National Institute of Standards and Technology (NIST), to identify and … more
Development of Epoxy Based Ge-68 Standard Phantom Sources
Last Updated Date: 06/27/2012 The use of imaging data for staging of disease, treatment planning, and monitoring of patient response continues to increase. In these types of … more
Advanced Neutron Imaging Facility
Last Updated Date: 06/27/2012 The NIST Neutron Imaging Facility (NNIF) at the NIST Center for Neutron Research is one of the most advanced neutron imaging facilities in the … more
Californium Neutron Irradiation Facility
Last Updated Date: 06/27/2012 NIST provides an exposure facility for high neutron fluence
Measurement of the Electron-Antineutrino Correlation in Neutron Decay
Last Updated Date: 06/27/2012 The angular correlation between the beta electron and antineutrino in nuclear beta decay a is the least well-known of the group of neutron decay … more
Wide-Angle Neutron Polarization Analysis
Last Updated Date: 06/27/2012 The capabilities of many neutron scattering instruments would be greatly enhanced by neutron polarization analyzers that can cover a wide angular … more
Precision Measurement of Radiative Neutron Decay Branching Ratio and Energy Spectrum
Last Updated Date: 06/27/2012 Although neutron decay is typically considered as a three-body process, in the radiative correction it is always accompanied by … more
Measurement of the Parity Non-Conserving Neutron Spin Rotation (PNC) in Liquid Helium
Last Updated Date: 06/27/2012 We recently completed a successful run of an experiment to study the strong interaction using weak interaction properties of the neutron. The … more
Search for Time Reversal Violation in Polarized Neutron Decay (emiT)
Last Updated Date: 06/27/2012 The "emiT" experiment searches for - or will set an improved upper bound on - the time-reversal asymmetry term in neutron beta decay. It … more
Precision Measurement of the Neutron-He3 Incoherent Scattering Length
Last Updated Date: 06/27/2012 The Neutron Interferometer and Optics Facility performed a precision measurement of the n- 3 He incoherent scattering length. Quantum … more |
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