Postdoctoral Research Associate – Modeling, ORNL, USA

Postdoctoral Position in USA

Postdoctoral Research Associate – Modeling: Oak Ridge National Laboratory (ORNL) is seeking a Postdoctoral Research Associate to join the Incident Modeling and Computational Sciences Group in the Nuclear Nonproliferation Division, National Security Sciences Directorate. The position involves research and development in the area of post-detonation nuclear fallout, focusing on hydrodynamic codes, material science, atmospheric physics, and health physics modeling.

Postdoctoral Research Associate – Nuclear Fallout Modeling

Designation: Postdoctoral Research Associate

Research Area: Nuclear Fallout Modeling

Location: Oak Ridge, TN, US, 37830


  • Basic Qualifications:
    • PhD in nuclear engineering or a related field completed within the last 5 years.
    • Understanding of nuclear fireball physics and chemistry modeling.
    • Excellent communication skills.

Job Description:

  • Conduct research on the formation, development, and transport of radioactive debris from urban nuclear explosions.
  • Utilize expertise in nuclear physics, chemistry, mathematical modeling, and code development.
  • Develop and implement calculational methods for simulating nuclear explosion processes and interpreting fallout data.
  • Focus on mathematical methods, inverse calculations, statistical models, and integrate them into existing modeling and simulation tools.
  • Maintain and develop codes, test performance on different operating systems, and validate results using numerically generated and measured data.
  • Perform statistical analysis of uncertainties and correlations in reconstructed values.
  • Interact with division staff, work independently, document work in reports/publications, interface with project sponsors, and contribute to research proposals.
  • Promote diversity, equity, inclusion, and accessibility in the workplace.

How to Apply:

  • Open date: January 29, 2024.
  • Next review date: Monday, Mar 18, 2024, 11:59 pm (Pacific Time).
  • Final date: Tuesday, Dec 31, 2024, 11:59 pm (Pacific Time).
  • Apply here.
  • Upload three letters of reference directly to your application or email to with the position title and number in the subject line.

Last Date for Apply: Applications will continue to be accepted until Tuesday, Dec 31, 2024, but full consideration is ensured if submitted by the review date on Monday, Mar 18, 2024.

Special Requirements: Applicants cannot have received their Ph.D. more than five years prior to the date of application and must complete all degree requirements before starting their appointment. The appointment length will be for up to 24 months with the potential for extension. Benefits at ORNL include competitive pay, medical and retirement plans, flexible work hours, and various employee amenities.



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