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Radiation Physics Portal

Programs and Projects
A Precision Reactor Antineutrino Oscillation and Spectrum Measurement (PROSPECT)

PROSPECT, the PRecision Oscillation and SPECTrum experiment, located at the High Flux Isotope Reactor (HFIR) at ORNL will measure the … more

Air Kerma Calibrations in Radiation Protection Level 137Cs and 60Co Gamma Ray Beams

The Dosimetry Group maintains and disseminates the national measurement standards for air-kerma (exposure) from 137 Cs and 60 Co gamma-ray beams … more

Lyman-Alpha Neutron Detector (LAND)

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

ICE 62755 Standard N42 Data Format

The purpose of the IEC 62755 standard N42 data format is to facilitate manufacturer-independent transfer of information from radiation measurement … more

Photovoltaic Carrier Dynamics Measured by Time-Resolved Terahertz Spectroscopy

Far-infrared (or THz, 25 to 300 micron wavelength) femtosecond laser methods are employed to measure photovoltaic (PV) materials spectra and … more

Active Interrogation Standards

Active interrogation involves directing nuclear radiation into a closed container and measuring secondary radiations to gain information about the … more

Beamline 2: Spectrometer Calibrations

Absolute irradiance calibrations based on the calculability of synchrotron radiation are performed on beamline 2. See GOES-R/EXIS and SDO as … more

Neutron Interferometer and Optics Facility (NIOF)

The Neutron Interferometry and Optics Facility (NIOF) located in the NIST Center for Neutron Research Guide Hall is one of the world's premier … more

Time-resolved infrared spectroscopy (TRIR)

Three independent femtosecond laser systems used for generating ultrafast pulses in the mid-IR (and far infrared:THz) through the UV; infrared … more

Medical-Industrial Radiation Facility

The Medical-Industrial Radiation Facility (MIRF) located in the  Radiation Physics Division  of the NIST  Physical Measurement Laboratory is a … more

Radiopharmaceutical Standardization Laboratory

Radioactivity measurements for diagnostic and therapeutic nuclear medicine in the United States are based on measurements at NIST. Activity … more

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