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Radiation Protection & Shielding
The Radiation Protection and Shielding Division is developing and promoting radiation protection and shielding aspects of nuclear science and technology — including interaction of nuclear radiation with materials and biological systems, instruments and techniques for the measurement of nuclear radiation fields, and radiation shield design and evaluation.
Meeting Spotlight
2024 ANS Annual Conference
June 16–19, 2024
Las Vegas, NV|Mandalay Bay Resort and Casino
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The Standards Committee is responsible for the development and maintenance of voluntary consensus standards that address the design, analysis, and operation of components, systems, and facilities related to the application of nuclear science and technology. Find out What’s New, check out the Standards Store, or Get Involved today!
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Fusion Science and Technology
Latest News
Former Exelon CEO Chris Crane remembered for “transformational milestones”
Crane
Exelon announced that Chris Crane, the company’s former chief executive, passed away on Saturday in Chicago at the age of 65.
Crane served as the company’s president and CEO from 2012 until his retirement in December 2022. During his tenure, he steered the energy company through several transformational milestones, including the successful mergers with Constellation Energy in 2012 and Pepco Holdings in 2016, creating the largest utility business by customer count in the United States.
In 2022, with the spin-off of Constellation as the generation and retail side of energy business (with the largest U.S. nuclear fleet), Crane led the creation of a stand-alone transmission and delivery energy company.
Brian L. Ellis, H. Fritzsche, J. Patel, J. Lang, S. Suppiah
Fusion Science and Technology | Volume 71 | Number 4 | May 2017 | Pages 660-665
Technical Note | doi.org/10.1080/15361055.2017.1290952
Articles are hosted by Taylor and Francis Online.
Tritium betavoltaics are one of the family of nuclear batteries which convert natural radioactive decay from a radioisotope into electricity that can provide continuous power without the requirement for replacement or recharging. Tritium is ideally suited to this application due to its high specific activity, low shielding requirements and relatively high availability. Owing to safety and environmental concerns over tritium leakage, metal tritides films are preferred as tritium betavoltaic sources. Titanium hydride and deuteride films were studied as analogues to titanium tritide films. The quality of the films depended on the temperature of hydrogen loading as films loaded at elevated temperatures (>100 °C) were brittle and delaminated from the semiconductor substrate while those exposed to hydrogen at room temperature continued to adhere to the substrate. For the latter films, evidence of hydrogen isotope loss was observed when left under ambient conditions over the course of a few weeks.