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Chemistry Programs & Projects

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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

International Comparison of Lu-177
Last Updated Date: 03/05/2013

There has been increasing interest during the past 10 years in the use of 177 Lu for radionuclide-based radiotherapy for certain types of cancers. … more

Standards for Clinical Radionuclide Calibrators
Last Updated Date: 03/05/2013

In nuclear medicine clinics, activity measurements are typically made using commercially available radionuclide calibrators which incorporate a … more

Small-Field Therapy Dosimetry using EPR
Last Updated Date: 03/05/2013

NIST has an ongoing program in small-field therapy dosimetry studies using alanine/EPR.

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 … more

NIST Chemistry Webbook
Last Updated Date: 02/27/2013

The NIST Chemistry WebBook is a site on the Internet ( http://webbook.nist.gov/ ) that provides convenient access to a variety of physical and … more

Virtual Measurements
Last Updated Date: 02/27/2013

Compared with conventional, physical measurements, the cost of computational modeling continues to drop. This has driven many industries to … more

Advanced X-ray Systems for the Detection of Special Nuclear Materials
Last Updated Date: 02/27/2013

The Dosimetry Group provides support to the Domestic Nuclear Detection Office (DNDO) of the Department of Homeland Security (DHS) for their … 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 … more

The Development of New Reference Standards for Digital Mammography
Last Updated Date: 02/27/2013

New NIST reference mammography beams using a tungsten target and silver, rhodium, molybdenum and aluminum filters at 20 kV to 50 kV have been … 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.

X-ray Security-Screening Standards for Homeland Security
Last Updated Date: 02/27/2013

The primary objective of this project is to assure the technical performance and radiation safety of the nation’s x-ray and gamma-ray … more

Reactivity of Nanoparticle Catalysts
Last Updated Date: 02/26/2013

Transition metal nanoparticle catalysts show great promise as the key enabling breakthrough for the realization of efficient and economical fuel … more

Prediction of Global Warming Potential
Last Updated Date: 02/26/2013

The global warming potential (GWP) of a number of compounds used by U.S. industry is not known or poorly known. Working with the EPA, a set of … more

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