ANS is committed to advancing, fostering, and promoting the development and application of nuclear sciences and technologies to benefit society.
Explore the many uses for nuclear science and its impact on energy, the environment, healthcare, food, and more.
Explore membership for yourself or for your organization.
Conference Spotlight
2026 ANS Annual Conference
May 31–June 3, 2026
Denver, CO|Sheraton Denver
Latest Magazine Issues
Jan 2026
Jul 2025
Latest Journal Issues
Nuclear Science and Engineering
February 2026
Nuclear Technology
January 2026
Fusion Science and Technology
Latest News
The spark of the Super: Teller–Ulam and the birth of the H-bomb—rivalry, credit, and legacy at 75 years
In early 1951, Los Alamos scientists Edward Teller and Stanislaw Ulam devised a breakthrough that would lead to the hydrogen bomb [1]. Their design gave the United States an initial advantage in the Cold War, though comparable progress was soon achieved independently in the Soviet Union and the United Kingdom.
Norihiro Doda (Japan Atomic Energy Agency), Shinya Kato (Japan Atomic Energy Agency), Erina Hamase (Japan Atomic Energy Agency), Kazuki Kuwagaki (Japan Atomic Energy Agency), Norihiro Kikuchi (Japan Atomic Energy Agency), Kazuya Ohgama (Japan Atomic Energy Agency), Kazuo Yoshimura (Japan Atomic Energy Agency), Ryuji Yoshikawa (Japan Atomic Energy Agency), Kenji Yokoyama (Japan Atomic Energy Agency), Tomoyuki Uwaba (Japan Atomic Energy Agency), Masaaki Tanaka (Japan Atomic Energy Agency)
Proceedings | 20th International Topical Meeting on Nuclear Reactor Thermal Hydraulics (NURETH-20) | Washington, D.C., August 20-25, 2023 | Pages 946-959