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Energy Programs & Projects

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Automated Multi-Sample Ionization Chamber for Radioactivity Standards
Last Updated Date: 03/11/2013

NIST radioactivity standards for gamma-ray emitting radionuclides are maintained as calibration factors for an automated ionization chamber.

Photon Absorbed-Dose-to-Water Primary Standards
Last Updated Date: 03/08/2013

Computational and experimental studies to obtain correction factors for heat defect, heat transfer and scattering/perturbation for the water … more

Xray Stress Measurement
Last Updated Date: 03/07/2013

Using X-ray diffraction techniques one can measure the full stress tensor just inside the surface of a sheet metal specimen under applied load.  … more

A Study of the Irradiation-Temperature Coefficient for Alanine Film and Pellet Dosimeters at Elevated Temperature
Last Updated Date: 03/01/2013

Correcting the response of a dosimeter for the average temperature during irradiation processing improves the accuracy of the dose measurement.  more

Electron-Beam Irradiation of Solar Cells
Last Updated Date: 02/27/2013

The Dosimetry Group operates a system capable of performing electron beam processing, which consists of a Van de Graaff electron accelerator and a … more

Theoretical Dosimetry and Radiation-Transport Calculations
Last Updated Date: 02/27/2013

The fundamental photon and charged particle interaction data and the radiation transport methods, pioneered and developed at NIST to calculate the … more

Calibration of Low-Energy Photon Brachytherapy Sources
Last Updated Date: 02/27/2013

Small radioactive "seed" sources used in prostate brachytherapy, containing the radionuclide 103 Pd, 125 I, or 131 Cs, are calibrated in terms of … more

NIST Work in Support of the Navy Dosimetry Program
Last Updated Date: 02/27/2013

The U.S. Navy uses thermoluminescent dosimeters (TLDs) to monitor personnel for radiation exposure.

Remote Sensing Methods for Imaging Dose to Water
Last Updated Date: 02/26/2013

Calorimetry based upon remote sensing of the temperature field in an irradiated volume would offer distinct advantages over the present approach, … more

Traceability for Industrial Irradiator
Last Updated Date: 02/26/2013

U.S. manufacturers have contended for decades that traceability to national standards for industrial irradiation applications is best achieved by … more

High Rate Testing
Last Updated Date: 02/22/2013

This project involves sample geometry and metrological development for high rate servohydraulic testing. (Content to be uploaded soon) more

Thermodynamic & Kinetic Data for Sustainable Energy
Last Updated Date: 10/05/2012

Industry needs thermodynamic and kinetic data for the development of new materials for sustainable energy applications; expanded and new databases … more

Measurements and Modeling of Moist Gases
Last Updated Date: 10/01/2012

Thermophysical properties of gas mixtures containing water are important in several contexts, such as humidity standards and the design of … more

Thermophysical Properties of Biofuels
Last Updated Date: 10/01/2012

The Thermophysical Properties Division has begun a program to develop thermophysical property data for the biofuels. Transportation fuels will … more

Spectroscopic Measurements of Atmospheric Gases for Monitoring Greenhouse Gases
Last Updated Date: 10/01/2012

Climate scientists are developing a new generation of spectrometers for the NASA-sponsored inventory of atmospheric greenhouse gases, most notably … more

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