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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.
H. O. Menlove and W. P. Poenitz
Nuclear Science and Engineering | Volume 33 | Number 1 | July 1968 | Pages 24-30
Technical Paper | doi.org/10.13182/NSE68-2
Articles are hosted by Taylor and Francis Online.
The capture cross section of 238U has been measured absolutely at a neutron energy of 30 keV using kinematically collimated neutrons from the 7Li(p, n) 7Be reaction near threshold. Activation techniques were used to determine both the number of capture events and the number of neutrons that occurred during the irradiation. The result of the 238U capture cross section measurement is 479 ± 14 mb at 30 keV. In addition, the shape of the 238 U capture cross section has been measured for neutron energies from 25 to 500 keV using neutrons from the 7Li(p, n)7 Be reaction. The capture reactions in the 238 U target were detected using a large liquid scintillator tank and time-of-flight techniques. The relative neutron flux was measured using a flat response neutron detector. The cross-section shape measurement was normalized to the present absolute measurement at 30 keV. The present measurement has been compared with several measured values, theoretical calculations, and compiled values of the 238U capture cross section as given by other authors.
