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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.
Akira Suda, Minoru Obara, Akira Noguchi
Fusion Science and Technology | Volume 11 | Number 3 | May 1987 | Pages 548-559
Technical Paper | KrF Laser | doi.org/10.13182/FST87-A25035
Articles are hosted by Taylor and Francis Online.
Atmospheric pressure operation of the electron-beam (e-beam)-excited KrF laser can greatly reduce the design constraints on a large-aperture laser module in the megajoule-class system as an inertial confinement fusion driver. The krypton-rich and Kr/F2 mixtures are suitable for the atmospheric pressure operation because these can produce high specific output energy without serious reduction of the intrinsic efficiency compared with conventional argon-rich mixtures. A 50-ns e-beam generator was used to pump the KrF laser oscillator by which fundamental studies of the KrF laser with atmospheric pressure krypton-rich mixtures were performed. A larger apparatus, using another 65-ns e-beam generator, demonstrated the specific output energy of 6.6 J/ℓ from a Kr/F2 mixture with an intrinsic efficiency of 6%. The latter apparatus was then used as an oscillator-amplifier system to investigate the amplifier characteristics of the KrF laser because the atmospheric pressure krypton-rich mixture is useful for large amplifier modules. In this oscillator-amplifier experiment, the power efficiency (extracted intensity divided by excitation rate and active length) in excess of 10% was obtained for krypton-rich mixtures.
