Nuclear and Particle Physics - Postdoctoral Researcher

Lawrence Livermore National Laboratory
Livermore, CA 94550

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 in the Nuclear and Particle Physics Group for a Postdoctoral Researcher to study indirect methods of determining cross sections important to short-lived fission product burnup in high neutron flux environments.  The main focus will be on the design, execution, and analysis of an approved experiment at CARIBU to measure the gamma-ray strength functions and nuclear level densities of 94,95,96Sr via the beta-Oslo method using MSUs SuN detector.  The results from this experiment will then be used as inputs to Hauser-Feshbach codes to constrain (n,g) cross sections and determine the effect on measurements of cumulative fission fragment yields in that mass region.  You will explore the synergy between Oslo methods (both traditional and beta-) and modern surrogate techniques.  You will also have the opportunity to support direct measurements of inelastic neutron cross sections using the Gamma-Energy Neutron-Energy Spectrometer for Inelastic Studies (GENESIS) at Lawrence Berkeley National Laboratorys 88-inch cyclotron. This position is in Nuclear and Particle Physics Group of the Nuclear and Chemical Sciences Division.

Essential Duties
- Plan and field approved experiments at facilities mentioned above
- Develop data-analysis tools and techniques to interpret the results of the experiments
- Perform simulations of the experimental setup to evaluate the detector response and background
- Work with nuclear theorists to interpret analyzed experimental results and compare against surrogate techniques
- Publish research results in peer-reviewed scientific or technical journals and present results at external conferences, seminars, and/or technical meetings
- Collaborate with scientists and engineers at LLNL, MSU, ANL, and other laboratories
- Provide technical contributions to the development of future nuclear physics experiments
- Perform other duties as assigned

- Recent PhD in a nuclear physics, nuclear engineering, nuclear astrophysics or related field
- Knowledge in nuclear structure, beta decay, and nuclear reaction physics as well as their experimental techniques and detector systems
- Experience working with rare isotope beams, indirect reaction techniques, strength function and level density measurement techniques, or similar experiments and analysis
- Programming experience in C++, python, and/or other programming languages
- Experience performing analysis using ROOT or comparable analysis framework
- Experience performing simulations with GEANT4 or MCNP, Hauser-Feshbach reaction codes such as TALYS, EMPIRE or YAHFC, and gamma-ray cascade models such as RANIER or DICEBOX
- Documented publication record in peer-reviewed literature in nuclear engineering, physics or a related field.
- Interpersonal skills necessary to interact with a diverse set of scientists, engineers, and other technical and administrative staff.

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:  None required.

However, if your assignment is longer than 179 days cumulatively within a calendar year, you must go through the Personal Identity Verification process.  This process includes completing an online background investigation form and receiving approval of the background check.  (This process does not apply to foreign nationals.)

For additional information, please see DOE Order 472.2


Note:   This is a 2 year Postdoctoral appointment with the possibility of extension to a maximum of 3 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.


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Nuclear and Particle Physics - Postdoctoral Researcher

Lawrence Livermore National Laboratory
Livermore, CA 94550

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