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Chemical Process and Nuclear Measurements Group

The group performs state-of-the art chemical and physical measurements to provide reference data, develop standards and models, and advance chemical measurement science and the fundamental understanding of chemical systems.

Research activities include elucidation of reaction mechanisms and time-dependent phenomena, such as the measurement of rate constants, transport properties, and the transformation of complex chemical systems by investigating composition, electronic and structural properties as it relates to chemical and physical function.   The group compiles, critically evaluates, and disseminates reference methods, data, and Standard Reference Materials.  Additionally, the group maintains facilities and expertise in nuclear methods for elemental analysis in collaboration with the NIST Center for Neutron Research and external partners.  The research focuses on areas of national and industrial needs such as those related to energy, manufacturing, security, and the environment. Group members are engaged with international standards development organizations and other National Metrology Institutes to establish comparability of measurement capabilities.

Atomic layer deposition (ALD)
Atomic layer deposition (ALD) reactor with time resolved optical diagnostics

TEM Images
Transmission electron microscopy (TEM) images of aerosol reference material candidates

Etch Chamber
Inductively-coupled Plasma-Etch Chamber

The video below is a 10 Minute Introduction to Neutron Depth Profiling

News and Updates

Detecting Chemical Agents with Confidence

The Joint Chemical Agent Detector (JCAD) has become an important defense tool on battlefields and in war-torn cities over the last few years. About the size and

Small Wonder

NIST helps semiconductor manufacturers—who are under continual pressure to make smaller, faster computer chips—reduce the time required to develop new

Projects and Programs

Real Fuels

This programs is aimed at determining the fundamental chemical and physical properties of the large organic compounds in fuels related to their combustion. Such


Niche partitioning of microbial communities at an ancient vitrified hillfort: implications for vitrified radioactive waste disposal

Jamie L. Weaver, Andrew Plymale, Jacqueline Wells, Carolyn I. Pearce, Colin Brislawn, Emily Graham, Tanya Cheeke, Jessica Allen, Vincent Danna, Kimberly Tyrrell, Rolf Sjoblom, Edward Vicenzi, John McCloy, Eva Hj?rthner-Holdar, Erik Ogenhall, Mia Englund, David Peeler, Albert Kruger, Rick L. Paul
A pre-Viking era vitrified hillfort, Broborg, provides a habitat analogue for disposed radioactive waste glass and shows strong niche partitioning among the

Tools and Instruments


Press Coverage


Group Leader

Office Manager