New Software Package to Model Delayed Gamma-Ray Spectra

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The Fission Induced Electromagnetic Response (FIER) code enables analytical prediction of delayed-ray spectra following fission. Developed by NSSC Fellow Eric Matthews with support from NSSC Executive Director Bethany Goldblum, LBNL Scientist Brian Quiter, and NSSC undergraduate Matthew Shinner, FIER uses evaluated nuclear data and solutions to the Bateman equations to calculate the time-dependent populations of fission products and their decay daughters resulting from irradiation of a fissionable isotope. These populations are then used in the calculation of gamma-ray emission rates to obtain the corresponding delayed gamma-ray spectra.
To learn more about FIER, visit the website:
The software is available for download here:
A manuscript detailing the platform, including code verification and validation, is available here:

International Nuclear Safeguards Policy Course at MIIS

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The Middlebury Institute of International Studies at Monterey (MIIS) and Lawrence Livermore National Laboratory (LLNL), in support of the U.S. Department of Energy National Nuclear Security Administration’s Next Generation Safeguards Initiative, are pleased to announce a one-week, tuition-free, intensive course on international nuclear safeguards policy and up to five paid summer internships.

The International Nuclear Safeguards Policy and Information Analysis Course will be held in Monterey from June 3- 7, 2019. The course is tuition free and open to all nationalities. Some stipends will be available to non-local applicants to partially cover transportation and housing costs. Course applicants who are U.S. citizens may also apply for a ten-week paid internship (June 10 to August 16, 2019) at LLNL in Livermore, CA. The internships pay $6,000 total which is paid in two installments of $3,000. Successful completion of the course is a prerequisite for the internships.

Application forms and more information are available at

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