Nuclear & Chemical Sciences

Three scientists hold up phones displaying information from an application.

Nuclear Detection Technology—NACS is deeply involved in developing new detection systems to reduce nuclear threats. NACS scientists also study the Solar System, neutrinos, and newly discovered particles while searching for the missing matter in the universe.

The fission time projection chamber on the stand and ready to take data.

Physics at the Frontiers—To further our understanding of the most fundamental constituents of nature and their interactions, NACS is pursuing compelling scientific problems through collaborations on key NNSA and Office of Science Projects.

Two scientists study formulas written on a white board.

Structure and Reactions of Nuclei—NACS’s vision for research in low-energy nuclear physics will push the frontiers of understanding by weaving together NACS’s capabilities in theory and experiment to fully capitalize on our nation’s investments in FRIB and high-performance computing.

Analytical and Forensic Science—NACS scientists advance forensic science related to chemical, biological, radiological, nuclear, and explosive threats by developing innovative extraction materials, analytical techniques, and assay methodologies.

A scientist loads samples on the Elemental Analyzer-Isotope Ratio Mass Spectrometry instrument.

Radiochemistry—Research in radiochemistry explores nuclear reactions, the limits of nuclear stability, and the properties of the heaviest elements.

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Nuclear & Chemical Sciences | On the frontier of nuclear physics, particle physics, and chemistry

As a discipline organization at Lawrence Livermore National Laboratory (LLNL), the Nuclear and Chemical Sciences (NACS) division offers deep expertise in physics and chemistry.

Combined with experience conducting programmatic work in nuclear and chemical science, we are able to provide innovative solutions for a range of national security problems. Every day, we focus on fundamental science, such as developing cutting-edge tools to uncover new chemical signatures or studying plasma effects on nuclear reactions. Our world-class capabilities in radiation detection, chemical and nuclear forensic science, isotope geochemistry, and environmental radiochemistry also contribute to scientific advancements that help make the world safer. At the Laboratory, scientists explore the chemistry of heavy elements (and discover new ones), chase elusive new particles, and answer important scientific questions about dark matter, neutrino physics, nuclear structure, nucleosynthesis, and the origins of the universe.

In addition to our technical mission, we actively build our expertise by collaborating with the scientific community, organizing summer schools, working closely with the Glenn T. Seaborg Institute, and hiring postdocs.

Division Leader: Sonia E. Létant
Deputy Division Leader, Operations: Mark Sutton
Deputy Division Leader, Science & Technology: Erich Ormand

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Our mission:
To advance scientific understanding, capabilities, and technologies in nuclear and particle physics, radiochemistry, forensic science, and isotopic signatures to support the science and security missions of LLNL.