Seaborg Institute Affiliates and Student Mentors

Research Interests:

Geochronology and geochemistry of samples from asteroids, Moon, and Mars and in order to constrain the nature and timing of processes occurring in the proto-planetary disk and planetary bodies early in the history of the Solar System.

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Lars Borg

Chemist

Email: borg5 [at] llnl.gov
Phone: 925-424-5722

Research Interests:

  • Applications of noble gases to nuclear forensics
  • Earth and planetary science
  • Inertial confinement fusion at the National Ignition Facility
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Bill Cassata

Research Staff

Email: cassata2 [at] llnl.gov
Phone: 925-423-2812

Research Interests:

  • Noble gas monitoring/investigation
  • Post-detonation nuclear forensics
  • Radioisotope production techniques
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Christine Egnatuk

Research Staff

Email: egnatuk1 [at] llnl.gov
Phone: 925-424-3586

Research Interests:

The development and application of radiometric chronometry and isotope geochemistry to problems in nuclear forensics and planetary geochronology and petrogenesis.

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Amy Gaffney

Research Staff

Email: gaffney1 [at] llnl.gov
Phone: 925-422-4396

Research Interests:

  • Development of reference materials for the interest of producing realistic nuclear forensic samples
  • Separation methods related to actinides, transactinides and superheavy elements
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Narek Gharibyan

Research Staff

Email: gharibyan1 [at] llnl.gov
Phone: 925-423-5289

Research Interests:

  • Nuclear forensics
  • The security of nuclear materials in general (e.g., safeguards, nonproliferation, and illicit trafficking)
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Brett Isselhardt

Research Staff

Email: isselhardt1 [at] llnl.gov
Phone: 925-424-3347

Research Interests:

The application of micro-analytical techniques for nuclear forensics, nuclear safeguards, and the transport of actinides in the environment.

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Ruth Kips

Nuclear Engineer

Email: kips1 [at] llnl.gov
Phone: 925-422-3860

Research Interests:

  • The analysis of nuclear and associated materials to better understand clues about the origins, locations or processes
  • The renaissance of historical fallout research to better understand fallout formation and interpretation in near surface nuclear events
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Kim Knight

Isotope Geochemist

Email: knight29 [at] llnl.gov
Phone: 925-422-9396

Research Interests:

The application of analytical techniques to national security problems, as well as advancing the state-of-the-art in mass spectrometry, elemental/molecular imaging, and surface and microanalysis.

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Mike Kristo

Senior Scientist

Email: kristo2 [at] llnl.gov
Phone: 925-422-7714

Research Interests:

Geochronology and geochemistry of planetary samples, formation and evolution of meteorites and planets, mineralogy and petrology of meteorites, isotopic and chemical evolution of the early solar system materials; nuclear forensics and attribution; and hydrothermal alteration and water-rock interaction in active and fossil hydrothermal systems and their relation to ore forming processes.

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Naomi Marks

Research Staff

Email: marks23 [at] llnl.gov
Phone: 925-422-3853

Research Interests:

Developing a better understanding of the physical and chemical processes that shaped the origin of our solar system from the condensation of the first solid materials to the evolution of planetary bodies.

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Jennifer Matzel

Research Staff

Email: matzel2 [at] llnl.gov
Phone: 925-422-0051

Research Interests:

Fundamental actinide chemistry, actinide behavior at solid-liquid interfaces, environmental transport and behavior of f-elements, engineered nanomaterials, extractions and separations of f-elements, microscopy, spectroscopic measurements, radiological measurements, nuclear forensics.

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Tashi Parsons-Davis

Radiochemist

Email: parsonsmoss1 [at] llnl.gov
Phone: 925-423-2304

Research Interests:

  • Modeling, chemometrics, and database development
  • Use of reactor modeling codes to generate spent fuel compositions, dose rates, and decay heat for nuclear forensics, nonproliferation, and nuclear security research
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Martin Robel

Research Staff

Email: robel1 [at] llnl.gov
Phone: 925-422-0314

Research Interests:

Advanced mass spectrometry for nuclear forensics and cosmochemistry.

Michael Savina

Physical Chemist

Email: savina1 [at] llnl.gov
Phone: 925-422-5060

Research Interests:

Low-energy nuclear physics, electroweak interactions, atom and ion trapping techniques, nuclear astrophysics, rare or exotic nuclear phenomena.

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Nicholas Scielzo

Research Staff

Email: scielzo1 [at] llnl.gov
Phone: 925-422-4172

Research Interests:

Study of the nuclear and chemical properties of actinides, transactinides, and superheavy elements; fission properties; target preparation and radiochemical separation techniques; rapid heavy element atom-at-a-time chemistry; the behavior of radioactive contaminants in the environment.

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Dawn Shaughnessy

Physicist

Email: shaughnessy2 [at] llnl.gov
Phone: 925-422-9574

Research Interests:

Studying the sustainability of water resources by applying environmental tracers in a variety of hydrological systems to investigate sources, path ways and travel times of water.

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Ate Visser

Research Staff

Email: visser3 [at] llnl.gov
Phone: 925-423-0956

Research Interests:

  • Environmental radiochemistry
  • Actinide chemistry
  • Surface complexation modeling of contaminant-mineral interactions
  • Reactive transport modeling
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Mavrik Zavarin

Geochemist

Email: zavarin1 [at] llnl.gov
Phone: 925-424-6491