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Calorimetry based upon remote sensing of the temperature field in an irradiated volume would offer distinct advantages for the dosimetry of nonstandard beams
NIST is in its eighth decade of providing critically evaluated, comprehensive databases of cross-section information for ionizing photons (x and gamma rays)
The fundamental photon and charged particle interaction data and the radiation transport methods, pioneered and developed at NIST to calculate the penetration
Expanding applications of radioactivity in medicine, energy, and national security demand quantification of complex radionuclide mixtures at uncertainty levels
The goal of the BIB-Trap Detector project is to develop a detector composed of solid-state devices that can be used as a reference detector for calibrations in
To compare the calibration capabilities for the spectral responsivity in the vacuum-ultraviolet spectral region between 135 nm and 250 nm, PTB and NIST agreed
The use of tissue/organ-on-a-chip systems is limited to endpoint and destructive measurements. Integration of electronic elements in these systems have proven
Biomolecular assembly allows the integration of nanoscale components into functional nanostructures. The Nanostructure Fabrication and Measurement Group
This program is directed towards characterizing the birefringence properties of optical materials for the wavelength range 0.12 μm – 15 μm. The birefringence
Central to fulfilling many of the Division’s programmatic goals, and those of other divisions at NIST-Boulder, the Quantum Electromagnetics Division is
We are developing a comprehensive next-generation greenhouse gas (GHG) calibration system capable of extending SI traceability to global satellite remote
ROSI (Robotic Optical Scattering Instrument) is a new facility for measuring reflectance and scattering of materials in the ultraviolet to short-wave infrared
Calibrations of the The Extreme ultraviolet/X-ray Irradiance Sensor (EXIS), which will be installed on the Geostationary Operations Environment Satellite R
NIST provides calibration services for force-measuring instruments by applying known forces, compression, tension or both, to the elastic transducer and
The NIST Mass and Force Group disseminates the unit of mass, the kilogram, to the US measurement system through calibrations of customer weights and weight sets
Three dosimetry calibration laboratories accredited by the American Association of Physicists in Medicine (AAPM) routinely perform calibrations of a large
The Dosimetry Group maintains and disseminates the national measurement standards for air-kerma (exposure) from 137Cs and 60Co gamma-ray beams and for absorbed
NIST calibrates certain user-owned encapsulated beta-particle sources and certain standards laboratory transfer instruments for applications in radiation
Small radioactive "seed" sources used in prostate brachytherapy, containing the radionuclides 103Pd, 125I, or 131Cs, are calibrated in terms of air-kerma
The Dosimetry Group calibrates well-type ionization chambers using Xoft miniature x-ray sources, which provide low-energy x-rays (< 50 keV) for electronic
The new NIST x-ray calibration facility has been designed to improve the measurement conditions for x-ray scatter, motion control, environmental conditions
Proficiency tests have been offered by the Dosimetry Group to support air-kerma traceability since the 1980’s. The Quality Management System incorporates the