Mass Spectrometry - Postdoctoral Researcher

Location:  Livermore, CA
Category:  Post Docs
Organization:  Physical and Life Sciences
Posting Requirement:  External w/ US Citizenship
Job ID: 107278
Job Code: Post-Dr Research Staff 1 (PDS.1)
Date Posted: July 14 2020

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Join us and make YOUR mark on the World!

Come join Lawrence Livermore National Laboratory (LLNL) where we apply science and technology to make the world a safer place; now one of 2020 Best Places to Work by Glassdoor!

We have an opening for a Postdoctoral Researcher to develop and pursue innovative research in the analysis of actinide decay series nuclides and stable metal isotopes in environmental samples and nuclear materials for nuclear forensics. You will perform isotopic analyses utilizing MC-ICP-MS to investigate the behavior of U-series and Pu-series nuclides during uranium and plutonium production processes, and to identify and develop stable metal isotope signatures of nuclear fuel cycle processes. This position is in Chemical and Isotopic Signatures group of the Nuclear and Chemical Sciences Division.
Essential Duties
- Develop and pursue innovative research addressing advanced nuclear forensics and isotope geochemistry.
- Determine the concentration and isotopic composition of actinide decay-series nuclides and other metal elements in complex matrices including nuclear materials using high-purity separation chemistry and multi-collector mass spectrometry.
- Document and publish research results in peer-reviewed scientific publications and present results at external conferences, seminars and/or technical meetings.
- Collaborate with other scientists and technical personnel to accomplish research goals.
- Perform other duties as assigned.
- Recent PhD in Geochemistry, Chemistry or related field.
- Experience in purification of trace actinides and other elements from complex matrices for mass spectrometric analysis of isotopic composition.
- Experience in multi-collector isotope ratio mass spectrometry for determination of isotopic composition and of concentration using isotope dilution and/or double spike.
- Experience in the interpretation and modeling of actinide decay-chain disequilibria as a chronometer of natural and/or nuclear fuel cycle processes, and/or stable metal isotope fractionation during geologic and anthropogenic processes.
- Proficient verbal and written communication skills necessary to work in a multidisciplinary team environment, author technical and scientific reports and publications, and deliver scientific presentations.
- Documented publication record in peer-reviewed literature with experience presenting research results to a large audience.

Pre-Employment Drug Test:  External applicant(s) selected for this position will be required to pass a post-offer, pre-employment drug test.  This includes testing for use of marijuana as Federal Law applies to us as a Federal Contractor.

Security Clearance:  This position requires a Department of Energy (DOE) Q-level clearance.

If you are selected, we will initiate a Federal background investigation to determine if you meet eligibility requirements for access to classified information or matter. In addition, all L or Q cleared employees are subject to random drug testing.  Q-level clearance requires U.S. citizenship.  If you hold multiple citizenships (U.S. and another country), you may be required to renounce your non-U.S. citizenship before a DOE L or Q clearance will be processed/granted.  For additional information, please see DOE Order 472.2

Note:   This is a one year Postdoctoral appointment with the possibility of extension to a maximum of two years.  Eligible candidates are those who have been awarded a PhD at time of hire date.

About Us

Lawrence Livermore National Laboratory (LLNL), located in the San Francisco Bay Area (East Bay), is a premier applied science laboratory that is part of the National Nuclear Security Administration (NNSA) within the Department of Energy (DOE).  LLNL's mission is strengthening national security by developing and applying cutting-edge science, technology, and engineering that respond with vision, quality, integrity, and technical excellence to scientific issues of national importance.  The Laboratory has a current annual budget of about $2.3 billion, employing approximately 6,900 employees.


LLNL is an affirmative action/ equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, marital status, national origin, ancestry, sex, sexual orientation, gender identity, disability, medical condition, protected veteran status, age, citizenship, or any other characteristic protected by law.