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Conference Spotlight
2025 ANS Winter Conference & Expo
November 9–12, 2025
Washington, DC|Washington Hilton
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Empowering the next generation: ANS’s newest book focuses on careers in nuclear energy
A new career guide for the nuclear energy industry is now available: The Nuclear Empowered Workforce by Earnestine Johnson. Drawing on more than 30 years of experience across 16 nuclear facilities, Johnson offers a practical, insightful look into some of the many career paths available in commercial nuclear power. To mark the release, Johnson sat down with Nuclear News for a wide-ranging conversation about her career, her motivation for writing the book, and her advice for the next generation of nuclear professionals.
When Johnson began her career at engineering services company Stone & Webster, she entered a field still reeling from the effects of the Three Mile Island incident in 1979, nearly 15 years earlier. Her hiring cohort was the first group of new engineering graduates the company had brought on since TMI, a reflection of the industry-wide pause in nuclear construction. Her first long-term assignment—at the Millstone site in Waterford, Conn., helping resolve design issues stemming from TMI—marked the beginning of a long and varied career that spanned positions across the country.
Randall R. Nason*
Nuclear Technology | Volume 67 | Number 2 | November 1984 | Pages 333-340
Technical Paper | Technique | doi.org/10.13182/NT84-A33521
Articles are hosted by Taylor and Francis Online.
The adjoint technique has been applied to accurately and economically predict the response of a portal monitor to photon emissions below ∼1.5 MeV, thus encompassing those sources generally of interest in nuclear safeguards applications. The adjoint source was defined as the product of the total attenuation coefficient and an experimentally determined efficiency factor, which accounts for the performance characteristics of the signal-processing system. The efficiency factor was determined from a combination of data obtained from a single NE-102 scintillator and results from corresponding three-dimensional forward MORSE calculations. A prototype walk-through portal was then fabricated with four identical NE-102 scintillators. Adjoint MORSE calculations were performed to obtain net count rates for various sources within this portal. These results were compared to experimental data and were found to agree to well within 10%. The photon response within the portal detection volume was then characterized by a series of MORSE calculations.
