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
Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
Standards Program
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!
Latest Magazine Issues
Jul 2025
Jan 2025
Latest Journal Issues
Nuclear Science and Engineering
August 2025
Nuclear Technology
Fusion Science and Technology
July 2025
Latest News
Hash Hashemian: Visionary leadership
As Dr. Hashem M. “Hash” Hashemian prepares to step into his term as President of the American Nuclear Society, he is clear that he wants to make the most of this unique moment.
A groundswell in public approval of nuclear is finding a home in growing governmental support that is backed by a tailwind of technological innovation. “Now is a good time to be in nuclear,” Hashemian said, as he explained the criticality of this moment and what he hoped to accomplish as president.
Hideo Nakamura, Yasuteru Sibamoto, Yoshinari Anoda, Yutaka Kukita, Kaichiro Mishima, Takashi Hibiki
Nuclear Technology | Volume 125 | Number 2 | February 1999 | Pages 213-224
Technical Paper | Thermal Hydraulics | doi.org/10.13182/NT99-A2943
Articles are hosted by Taylor and Francis Online.
High-frame-rate neutron radiography is used to observe the behavior of a high-temperature (773 K) molten Pb-Bi alloy dropped into a vessel that contains water. Experiments are also performed with an empty vessel. Using high-speed cameras combined with image intensifiers and a high-flux neutron source, the interactions among the molten and solidified alloy with water and steam are visualized at imaging rates of 500 and 125 frames/s. The behavior of the melt and steam bubbles is observed clearly in contrast to water. Observation of AuCd3 tracer particles in the molten metal dropped into the vessel that contains water is also successful. The velocity distribution in the melt is measured successfully by means of particle image velocimetry (PIV) using tracer particles. This visualization technique proves to be a promising tool to observe and measure the rapid and complex phenomena of a metal-gas-liquid mixture.
